The document discusses determinants of matrices and their geometric interpretations. It begins by defining a matrix as a rectangular table of numbers or formulas. It then explains that the determinant of a 2x2 matrix gives the signed area of the parallelogram defined by the row vectors of the matrix. The sign of the determinant indicates whether the parallelogram is swept clockwise or counterclockwise. Finally, it generalizes these concepts to 3x3 matrices by writing out the formula for the determinant as a sum of signed areas of parallelograms.
The document defines the determinant of a square matrix. For a 1x1 matrix with value k, the determinant is defined to be k. For a 2x2 matrix with values a, b, c, d, the determinant is defined as ad - bc. This definition is motivated geometrically as representing the signed area of the parallelogram formed by the vector points (a,b) and (c,d). It is also motivated algebraically in that a system of equations has a unique solution if and only if the determinant of the coefficient matrix is non-zero. Cramer's rule is presented for solving systems of linear equations.
The document discusses how to solve radical equations by squaring both sides of the equation repeatedly to remove radicals. Key steps include:
1) Isolating the radical term to one side of the equation before squaring.
2) Using the identity (a ± b)2 = a2 ± 2ab + b2 to expand squared terms.
3) Squaring both sides and solving the resulting non-radical equation for the variable.
4) Checking that solutions satisfy the original radical equation. Examples demonstrate these techniques.
Chapter 5: Determinant
Covered Topics:
5.1 Definition of Determinant
5.2 Expansion of Determinant of order 2X3
5.3 Crammer’s rule to solve simultaneous equations in 3 unknowns
Youtube Link: https://youtu.be/C2qctvyjG7U
Document:
Our Blog Link: http://jjratnani.wordpress.com/
5 4 equations that may be reduced to quadraticsmath123b
The document discusses reducing equations to quadratic equations using substitution. It explains that if a pattern is repeated in an expression, a variable can be substituted to simplify the equation. Examples show substituting (x/(x-1)) with y, then solving the resulting quadratic equation for y and back substituting to find values of x. This reduction technique converts difficult equations into two easier equations to solve: the quadratic after substitution and then solving for the original variable.
The document describes three methods for solving second degree equations (ax2 + bx + c = 0):
1) The square-root method, which is used when the x-term is missing. It involves solving for x2 and taking the square root to find x.
2) Factoring, which involves factoring the equation into the form (ax + b)(cx + d) = 0. It can only be used if b2 - 4ac is a perfect square.
3) The quadratic formula, which can be used to solve any second degree equation.
The document discusses methods for finding the real solutions of second degree (quadratic) equations. It explains the square root method for equations where the x-term is missing, involving solving for x^2 and taking the square root. It also explains the factoring method, involving factoring the equation into two binomials and setting each equal to 0. The quadratic formula is presented as a general method for solving any second degree equation, and its derivation using completing the square is mentioned.
19 more parabolas a& hyperbolas (optional) xmath260
After dividing the general quadratic equation Ax2 + By2 + Cx + Dy = E by A, three types of conic sections can be obtained:
1) Parabolas occur when B = 0, resulting in equations of the form 1x2 + #x + #y = #.
2) Circles occur when A = B, resulting in the equation 1x2 + 1y2 = 1.
3) Hyperbolas occur when A and B have opposite signs, resulting in equations of the form 1x2 + ry2 + #x + #y = # with r < 0. Hyperbolas have two foci and asymptotes, and points on the hyperbola have
The document provides an overview of terms and steps used to solve linear and quadratic equations. It defines variables, coefficients, constants, expressions, and equations. It then outlines the steps to solve linear equations which are: 1) simplify, 2) move variables, 3) isolate variables by undoing addition/subtraction and multiplication/division, and 4) check the answer. Examples are provided to demonstrate each step. The document also provides an overview of solving quadratic equations by factoring or using the quadratic formula. More practice problems are provided for the reader to solve.
The document defines the determinant of a square matrix. For a 1x1 matrix with value k, the determinant is defined to be k. For a 2x2 matrix with values a, b, c, d, the determinant is defined as ad - bc. This definition is motivated geometrically as representing the signed area of the parallelogram formed by the vector points (a,b) and (c,d). It is also motivated algebraically in that a system of equations has a unique solution if and only if the determinant of the coefficient matrix is non-zero. Cramer's rule is presented for solving systems of linear equations.
The document discusses how to solve radical equations by squaring both sides of the equation repeatedly to remove radicals. Key steps include:
1) Isolating the radical term to one side of the equation before squaring.
2) Using the identity (a ± b)2 = a2 ± 2ab + b2 to expand squared terms.
3) Squaring both sides and solving the resulting non-radical equation for the variable.
4) Checking that solutions satisfy the original radical equation. Examples demonstrate these techniques.
Chapter 5: Determinant
Covered Topics:
5.1 Definition of Determinant
5.2 Expansion of Determinant of order 2X3
5.3 Crammer’s rule to solve simultaneous equations in 3 unknowns
Youtube Link: https://youtu.be/C2qctvyjG7U
Document:
Our Blog Link: http://jjratnani.wordpress.com/
5 4 equations that may be reduced to quadraticsmath123b
The document discusses reducing equations to quadratic equations using substitution. It explains that if a pattern is repeated in an expression, a variable can be substituted to simplify the equation. Examples show substituting (x/(x-1)) with y, then solving the resulting quadratic equation for y and back substituting to find values of x. This reduction technique converts difficult equations into two easier equations to solve: the quadratic after substitution and then solving for the original variable.
The document describes three methods for solving second degree equations (ax2 + bx + c = 0):
1) The square-root method, which is used when the x-term is missing. It involves solving for x2 and taking the square root to find x.
2) Factoring, which involves factoring the equation into the form (ax + b)(cx + d) = 0. It can only be used if b2 - 4ac is a perfect square.
3) The quadratic formula, which can be used to solve any second degree equation.
The document discusses methods for finding the real solutions of second degree (quadratic) equations. It explains the square root method for equations where the x-term is missing, involving solving for x^2 and taking the square root. It also explains the factoring method, involving factoring the equation into two binomials and setting each equal to 0. The quadratic formula is presented as a general method for solving any second degree equation, and its derivation using completing the square is mentioned.
19 more parabolas a& hyperbolas (optional) xmath260
After dividing the general quadratic equation Ax2 + By2 + Cx + Dy = E by A, three types of conic sections can be obtained:
1) Parabolas occur when B = 0, resulting in equations of the form 1x2 + #x + #y = #.
2) Circles occur when A = B, resulting in the equation 1x2 + 1y2 = 1.
3) Hyperbolas occur when A and B have opposite signs, resulting in equations of the form 1x2 + ry2 + #x + #y = # with r < 0. Hyperbolas have two foci and asymptotes, and points on the hyperbola have
The document provides an overview of terms and steps used to solve linear and quadratic equations. It defines variables, coefficients, constants, expressions, and equations. It then outlines the steps to solve linear equations which are: 1) simplify, 2) move variables, 3) isolate variables by undoing addition/subtraction and multiplication/division, and 4) check the answer. Examples are provided to demonstrate each step. The document also provides an overview of solving quadratic equations by factoring or using the quadratic formula. More practice problems are provided for the reader to solve.
The document provides a list of formulae for the ICSE Mathematics (Class 10) exam. It covers topics like commercial arithmetic, algebra, coordinate geometry, geometry, mensuration, trigonometry, and statistics. For each topic, relevant formulae are listed along with explanations. The exam will have one 2-hour paper divided into two sections carrying 80 marks total. Section I will consist of short answer questions and Section II will require answering 4 out of 7 questions.
This document provides a summary of topics related to algebra, functions, and calculus including: linear and quadratic expressions, simultaneous equations, completing the square, trigonometric ratios, differentiation, tangents, normals, and finding stationary points through higher derivatives. It outlines key steps and methods for solving various types of problems within these topics.
This presentation summarizes key information about the general equation of second degree and conic sections. It defines the general equation of second degree as involving at least one variable squared. It describes how this equation defines different conic sections depending on the values of coefficients a, b, and h. Specifically, it represents a pair of lines, a circle, parabola, ellipse, or hyperbola. The presentation provides examples of reducing a second degree equation to standard form and finding the equations of related shapes like the latus rectum and directrices.
The document discusses three methods for solving second degree equations (ax2 + bx + c = 0):
1) The square-root method, which is used when the x-term is missing. It involves solving for x2 and taking the square root to find x.
2) Factoring, which involves factoring the equation into the form (ax + b)(cx + d) = 0. It is only applicable if b2 - 4ac is a perfect square.
3) The quadratic formula, which can be used to solve any second degree equation.
The document discusses rules for simplifying radical expressions. It states the square root and multiplication rules, which are that the square root of a squared term is the term itself, and that the square root of a product is the product of the square roots. Examples are provided to demonstrate applying these rules to simplify radical expressions by extracting square factors from the radicand. The division rule for radicals is also stated.
The document discusses solving literal equations by isolating the variable of interest on one side of the equation. It provides examples of solving equations for various variables by adding, subtracting, multiplying, or dividing both sides of the equation by the same quantity. The goal is to isolate the variable being solved for so it stands alone on one side of the equal sign. Steps include clearing fractions, moving all other terms to the other side of the equation, and then dividing both sides by the coefficient of the variable being solved for.
The document discusses the algebra of radicals. It provides the multiplication rule that √xy = √x√y and √xx = x. It also provides the division rule. It then gives examples of simplifying radical expressions using these rules, such as √3 * √3 = 3, 3√3 * √3 = 9, and (3√3)2 = 27.
This document contains questions from assignments in differential calculus, continuity and differentiation, rate of change of quantities, increasing and decreasing functions, tangents and normals, and approximation. It also includes word problems involving optimization such as finding dimensions that result in maximum area, volume, or other quantities. There are over 25 questions in total across these calculus topics.
Mathematics 9 Lesson 1-D: System of Equations Involving Quadratic EquationsJuan Miguel Palero
This powerpoint presentation discusses or talks about the topic or lesson System of Equations involving Quadratic Equations. It also discusses and explains the rules, steps and examples of System of Equations involving Quadratic Equations
The document discusses first degree (linear) functions. It explains that most real-world mathematical functions can be composed of algebraic, trigonometric, or exponential-log formulas. Linear functions of the form f(x)=mx+b are especially important, where m is the slope and b is the y-intercept. The slope-intercept form allows expressions of the form Ax+By=C to be written as functions with y as the output. Examples are given of finding the slope and form of linear equations.
The document discusses the difference quotient formula for calculating the slope between two points (x1,y1) and (x2,y2) on a function y=f(x). It shows that the slope m is equal to (f(x+h)-f(x))/h, where h is the difference between x1 and x2. This "difference quotient" formula allows slopes to be calculated from the values of a function at two nearby points. Examples are given of simplifying the difference quotient for quadratic and rational functions.
The question asks to solve a system of linear inequalities graphically. The system is: x + y ≤ 9, y > x, x ≥ 0. The solution region is the shaded area where all the individual inequality regions overlap, which is the triangular region bounded by the lines y = x, x = 0, and x + y = 9.
This document provides an overview of key concepts in real numbers and geometry. It defines sets and set operations like union, intersection, and difference. It describes the properties of real numbers, including natural numbers, integers, fractions, algebraic numbers, and transcendental numbers. The document also covers inequalities, absolute value, the number line, distance and midpoint formulas, and representations of conic sections like circles, parabolas, ellipses, and hyperbolas. Examples are provided to illustrate solving inequalities with absolute value, finding distance and midpoint, and the standard forms of conic sections. In conclusion, it references two textbooks on calculus and geometry.
The document discusses three methods for solving second degree equations (ax2 + bx + c = 0):
1) The square-root method, which is used when the x-term is missing. It involves solving for x2 and taking the square root to find x.
2) Factoring, which involves factoring the equation into the form (ax + b)(cx + d) = 0. It is only applicable if b2 - 4ac is a perfect square.
3) The quadratic formula, which can be used to solve any second degree equation.
The document provides properties of determinants and examples of their applications. It also gives tips for solving problems based on properties of determinants. Finally, it lists 20 assignment questions related to matrices and determinants, covering topics like solving systems of equations using matrices, finding the inverse of a matrix, and applying properties of determinants.
The document discusses first degree (linear) functions. It states that most real-world mathematical functions can be composed of formulas from three families: algebraic, trigonometric, and exponential-logarithmic. It focuses on linear functions of the form f(x)=mx+b, where m is the slope and b is the y-intercept. Examples are given of equations and how to determine the slope and y-intercept to write the equation in slope-intercept form as a linear function.
The document discusses rules for simplifying expressions involving radicals. It presents the multiplication rule that √x∙y = √x∙√y and the division rule. It then gives examples of simplifying expressions such as √3∙√3 = 3, 3√3∙√3 = 9, and (3√3)2 = 27 using these rules.
This document discusses two types of log and exponential equations: those that do not require calculators and numerical equations that do. Equations that do not require calculators have related bases on both sides and can be simplified using the law of uniqueness of log and exponential functions. These equations are solved by consolidating bases or logs and then dropping the common base. Numerical equations require using calculators to evaluate logarithms and exponents. Examples of solving each type of equation without calculators are provided.
The document discusses key concepts in coordinate geometry, including:
- Length, gradient, and midpoint of lines between two points
- Finding the distance and equation of a line given two points or the gradient and one point
- Parallel and perpendicular lines having related gradients
- Finding the coordinates of points of intersection between two lines or a line and curve by solving their equations simultaneously
- Using the discriminant of a quadratic equation to determine the number of intersection points between a curve and line
This document contains 10 math questions related to trigonometric functions, sets, relations and functions, complex numbers, sequences and series, straight lines, conic sections. The questions range from proving identities and equations to finding specific values based on given information. They require various trigonometric, algebraic and geometric problem solving skills at a higher-order thinking level.
The document discusses matrices and determinants. It defines a matrix as a rectangular table with numbers or formulas as entries. It provides examples of 2x2 and 3x3 matrices. The document explains that square matrices have a number called the determinant extracted from them. It then discusses how the 2x2 determinant represents the signed area of a parallelogram defined by the row vectors, and explores properties of the sign of the determinant. Finally, it suggests generalizing these concepts to 3x3 determinants.
Vectors have both magnitude and direction, represented by arrows. The sum of two vectors is obtained by placing the tail of one vector at the head of the other. If the vectors are at right angles, their dot product is zero, while their cross product is maximum. Scalar multiplication scales the magnitude but not the direction of a vector.
The document provides a list of formulae for the ICSE Mathematics (Class 10) exam. It covers topics like commercial arithmetic, algebra, coordinate geometry, geometry, mensuration, trigonometry, and statistics. For each topic, relevant formulae are listed along with explanations. The exam will have one 2-hour paper divided into two sections carrying 80 marks total. Section I will consist of short answer questions and Section II will require answering 4 out of 7 questions.
This document provides a summary of topics related to algebra, functions, and calculus including: linear and quadratic expressions, simultaneous equations, completing the square, trigonometric ratios, differentiation, tangents, normals, and finding stationary points through higher derivatives. It outlines key steps and methods for solving various types of problems within these topics.
This presentation summarizes key information about the general equation of second degree and conic sections. It defines the general equation of second degree as involving at least one variable squared. It describes how this equation defines different conic sections depending on the values of coefficients a, b, and h. Specifically, it represents a pair of lines, a circle, parabola, ellipse, or hyperbola. The presentation provides examples of reducing a second degree equation to standard form and finding the equations of related shapes like the latus rectum and directrices.
The document discusses three methods for solving second degree equations (ax2 + bx + c = 0):
1) The square-root method, which is used when the x-term is missing. It involves solving for x2 and taking the square root to find x.
2) Factoring, which involves factoring the equation into the form (ax + b)(cx + d) = 0. It is only applicable if b2 - 4ac is a perfect square.
3) The quadratic formula, which can be used to solve any second degree equation.
The document discusses rules for simplifying radical expressions. It states the square root and multiplication rules, which are that the square root of a squared term is the term itself, and that the square root of a product is the product of the square roots. Examples are provided to demonstrate applying these rules to simplify radical expressions by extracting square factors from the radicand. The division rule for radicals is also stated.
The document discusses solving literal equations by isolating the variable of interest on one side of the equation. It provides examples of solving equations for various variables by adding, subtracting, multiplying, or dividing both sides of the equation by the same quantity. The goal is to isolate the variable being solved for so it stands alone on one side of the equal sign. Steps include clearing fractions, moving all other terms to the other side of the equation, and then dividing both sides by the coefficient of the variable being solved for.
The document discusses the algebra of radicals. It provides the multiplication rule that √xy = √x√y and √xx = x. It also provides the division rule. It then gives examples of simplifying radical expressions using these rules, such as √3 * √3 = 3, 3√3 * √3 = 9, and (3√3)2 = 27.
This document contains questions from assignments in differential calculus, continuity and differentiation, rate of change of quantities, increasing and decreasing functions, tangents and normals, and approximation. It also includes word problems involving optimization such as finding dimensions that result in maximum area, volume, or other quantities. There are over 25 questions in total across these calculus topics.
Mathematics 9 Lesson 1-D: System of Equations Involving Quadratic EquationsJuan Miguel Palero
This powerpoint presentation discusses or talks about the topic or lesson System of Equations involving Quadratic Equations. It also discusses and explains the rules, steps and examples of System of Equations involving Quadratic Equations
The document discusses first degree (linear) functions. It explains that most real-world mathematical functions can be composed of algebraic, trigonometric, or exponential-log formulas. Linear functions of the form f(x)=mx+b are especially important, where m is the slope and b is the y-intercept. The slope-intercept form allows expressions of the form Ax+By=C to be written as functions with y as the output. Examples are given of finding the slope and form of linear equations.
The document discusses the difference quotient formula for calculating the slope between two points (x1,y1) and (x2,y2) on a function y=f(x). It shows that the slope m is equal to (f(x+h)-f(x))/h, where h is the difference between x1 and x2. This "difference quotient" formula allows slopes to be calculated from the values of a function at two nearby points. Examples are given of simplifying the difference quotient for quadratic and rational functions.
The question asks to solve a system of linear inequalities graphically. The system is: x + y ≤ 9, y > x, x ≥ 0. The solution region is the shaded area where all the individual inequality regions overlap, which is the triangular region bounded by the lines y = x, x = 0, and x + y = 9.
This document provides an overview of key concepts in real numbers and geometry. It defines sets and set operations like union, intersection, and difference. It describes the properties of real numbers, including natural numbers, integers, fractions, algebraic numbers, and transcendental numbers. The document also covers inequalities, absolute value, the number line, distance and midpoint formulas, and representations of conic sections like circles, parabolas, ellipses, and hyperbolas. Examples are provided to illustrate solving inequalities with absolute value, finding distance and midpoint, and the standard forms of conic sections. In conclusion, it references two textbooks on calculus and geometry.
The document discusses three methods for solving second degree equations (ax2 + bx + c = 0):
1) The square-root method, which is used when the x-term is missing. It involves solving for x2 and taking the square root to find x.
2) Factoring, which involves factoring the equation into the form (ax + b)(cx + d) = 0. It is only applicable if b2 - 4ac is a perfect square.
3) The quadratic formula, which can be used to solve any second degree equation.
The document provides properties of determinants and examples of their applications. It also gives tips for solving problems based on properties of determinants. Finally, it lists 20 assignment questions related to matrices and determinants, covering topics like solving systems of equations using matrices, finding the inverse of a matrix, and applying properties of determinants.
The document discusses first degree (linear) functions. It states that most real-world mathematical functions can be composed of formulas from three families: algebraic, trigonometric, and exponential-logarithmic. It focuses on linear functions of the form f(x)=mx+b, where m is the slope and b is the y-intercept. Examples are given of equations and how to determine the slope and y-intercept to write the equation in slope-intercept form as a linear function.
The document discusses rules for simplifying expressions involving radicals. It presents the multiplication rule that √x∙y = √x∙√y and the division rule. It then gives examples of simplifying expressions such as √3∙√3 = 3, 3√3∙√3 = 9, and (3√3)2 = 27 using these rules.
This document discusses two types of log and exponential equations: those that do not require calculators and numerical equations that do. Equations that do not require calculators have related bases on both sides and can be simplified using the law of uniqueness of log and exponential functions. These equations are solved by consolidating bases or logs and then dropping the common base. Numerical equations require using calculators to evaluate logarithms and exponents. Examples of solving each type of equation without calculators are provided.
The document discusses key concepts in coordinate geometry, including:
- Length, gradient, and midpoint of lines between two points
- Finding the distance and equation of a line given two points or the gradient and one point
- Parallel and perpendicular lines having related gradients
- Finding the coordinates of points of intersection between two lines or a line and curve by solving their equations simultaneously
- Using the discriminant of a quadratic equation to determine the number of intersection points between a curve and line
This document contains 10 math questions related to trigonometric functions, sets, relations and functions, complex numbers, sequences and series, straight lines, conic sections. The questions range from proving identities and equations to finding specific values based on given information. They require various trigonometric, algebraic and geometric problem solving skills at a higher-order thinking level.
The document discusses matrices and determinants. It defines a matrix as a rectangular table with numbers or formulas as entries. It provides examples of 2x2 and 3x3 matrices. The document explains that square matrices have a number called the determinant extracted from them. It then discusses how the 2x2 determinant represents the signed area of a parallelogram defined by the row vectors, and explores properties of the sign of the determinant. Finally, it suggests generalizing these concepts to 3x3 determinants.
Vectors have both magnitude and direction, represented by arrows. The sum of two vectors is obtained by placing the tail of one vector at the head of the other. If the vectors are at right angles, their dot product is zero, while their cross product is maximum. Scalar multiplication scales the magnitude but not the direction of a vector.
1. The document discusses matrices and determinants. It defines different types of matrices such as rectangular, square, diagonal, scalar, row, column, identity, zero, upper triangular, and lower triangular matrices.
2. It explains how to calculate determinants of matrices. The determinant of a 1x1 matrix is the single element. The determinant of a 2x2 matrix is calculated using a formula. Determinants of higher order matrices are calculated by expanding along rows or columns.
3. It introduces concepts of minors, cofactors, and explains how the value of a determinant can be written in terms of its minors and cofactors. It also lists some properties and operations for determinants.
The document discusses matrices and determinants. It defines different types of matrices like rectangular, square, diagonal, scalar, row, column, identity and zero matrices. It explains how to find the determinant of matrices of order 1, 2 and 3 by expansion along the first row. It also defines minors, cofactors and properties of determinants. It describes how to perform row and column operations to evaluate determinants.
The document discusses matrices and determinants. It defines different types of matrices like rectangular, square, diagonal, scalar, row, column, identity and zero matrices. It explains how to find the determinant of matrices of order 1, 2 and 3 by expansion along the first row. It also defines minors, cofactors and properties of determinants. It describes how to perform row and column operations to evaluate determinants. Finally, it provides examples to calculate determinants.
The document discusses various types of matrices:
- Row and column matrices are matrices with only one row or column respectively.
- A square matrix has the same number of rows and columns.
- A diagonal matrix has non-zero elements only along its main diagonal.
- An identity matrix has ones along its main diagonal and zeros elsewhere.
- A scalar matrix has all elements along its main diagonal multiplied by a scalar.
- A null matrix has all elements equal to zero.
The document also discusses properties such as the transpose of a matrix, symmetric matrices, and how to add, subtract and multiply matrices.
1. The document discusses matrices and determinants, including types of matrices like rectangular, square, diagonal, and scalar matrices.
2. It defines determinants and provides rules for computing determinants of matrices of order 2 and 3 by expanding along rows or columns.
3. Key concepts covered include minors, cofactors, properties of determinants like how row operations affect the determinant value, and examples of computing determinants.
Vectors have both magnitude and direction and are represented by arrows. Scalars have only magnitude. There are two main types of operations on vectors: addition and multiplication. Vector addition uses the parallelogram or triangle rule to find the resultant vector. Multiplication of a vector by a scalar changes its magnitude but not direction. The dot product of vectors is a scalar that depends on their relative orientation. The cross product of vectors is another vector perpendicular to both original vectors. Examples demonstrate calculating vector components, additions, subtractions and products.
Determinants provide a scalar quantity associated with square matrices. There are several properties of determinants, including that the determinant of a matrix does not change if rows or columns are interchanged. The determinant can be expressed as the sum of the products of each element and its corresponding cofactor. Examples show how to evaluate determinants by expanding along rows or columns and applying properties such as identical rows resulting in a determinant of zero.
Determinants provide a scalar quantity associated with square matrices. There are several properties of determinants, including that the determinant of a matrix does not change if rows or columns are interchanged. The determinant can be expressed as the sum of the products of each element and its corresponding cofactor. Examples show how to evaluate determinants by expanding along rows or columns and applying properties such as identical rows resulting in a determinant of zero.
Concept of Particles and Free Body Diagram
Why FBD diagrams are used during the analysis?
It enables us to check the body for equilibrium.
By considering the FBD, we can clearly define the exact system of forces which we must use in the investigation of any constrained body.
It helps to identify the forces and ensures the correct use of equation of equilibrium.
Note:
Reactions on two contacting bodies are equal and opposite on account of Newton's III Law.
The type of reactions produced depends on the nature of contact between the bodies as well as that of the surfaces.
Sometimes it is necessary to consider internal free bodies such that the contacting surfaces lie within the given body. Such a free body needs to be analyzed when the body is deformable.
Physical Meaning of Equilibrium and its essence in Structural Application
The state of rest (in appropriate inertial frame) of a system particles and/or rigid bodies is called equilibrium.
A particle is said to be in equilibrium if it is in rest. A rigid body is said to be in equilibrium if the constituent particles contained on it are in equilibrium.
The rigid body in equilibrium means the body is stable.
Equilibrium means net force and net moment acting on the body is zero.
Essence in Structural Engineering
To find the unknown parameters such as reaction forces and moments induced by the body.
In Structural Engineering, the major problem is to identify the external reactions, internal forces and stresses on the body which are produced during the loading. For the identification of such parameters, we should assume a body in equilibrium. This assumption provides the necessary equations to determine the unknown parameters.
For the equilibrium body, the number of unknown parameters must be equal to number of available parameters provided by static equilibrium condition.
- The document discusses calculating integrals using substitution and breaking them into simpler integrals.
- It provides an example of using constants A and B to rewrite an integral in terms of simpler integrals I1 and I2.
- The integrals I1 and I2 are then evaluated using substitution and integral formulas to arrive at the final solution for the original integral.
This document provides information about determinants of square matrices:
- It defines the determinant of a matrix as a scalar value associated with the matrix. Determinants are computed using minors and cofactors.
- Properties of determinants are described, such as how determinants change with row/column operations or identical rows/columns.
- Examples are provided to demonstrate computing determinants by expanding along rows or columns and using cofactors and minors.
- Applications of determinants include finding the area of triangles and solving systems of linear equations.
The document is a maths project report for class 12th student Tabrez Khan on the topic of determinants. It contains definitions and properties of determinants of order 1, 2 and 3 matrices. It discusses minors, cofactors and applications of determinants like solving systems of linear equations using Cramer's rule. It also contains examples of evaluating determinants and applying properties of determinants to simplify expressions.
This document discusses the dot product of vectors. It defines the dot product as the sum of the products of the corresponding components of two vectors. The dot product is a scalar quantity that can be used to determine the angle between vectors and whether vectors are orthogonal. It also discusses the relationship between the dot product and the projections of one vector onto another vector.
The document provides information about geometry and trigonometry concepts. It discusses segments of a line, harmonic division of segments, the golden section, relationships between points on a line, and exercises related to finding lengths and distances given information about points. It also covers trigonometric angles and systems for measuring angles, including the sexagesimal, centesimal, and radial systems. Conversions between these systems are discussed along with example exercises calculating angle measures in different systems.
- The document discusses determinants of square matrices, including how to calculate the determinant of matrices of various orders, properties of determinants, and some applications of determinants.
- Key concepts covered include minors, cofactors, expanding determinants in terms of minors and cofactors, properties such as how determinants change with row/column operations, and using determinants to solve systems of linear equations.
- Examples are provided to demonstrate calculating determinants and using properties to simplify or prove identities about determinants.
This document defines and provides examples of common matrix operations:
- A matrix is a two-dimensional array of elements arranged in rows and columns. Special types of matrices include row vectors, column vectors, square matrices, and identity matrices.
- Matrix addition and subtraction are defined element-wise, where the resulting matrix has the same dimensions.
- For matrix multiplication, the number of columns of the first matrix must equal the number of rows of the second. The result is a matrix with the number of rows of the first and the number of columns of the second.
- Matrix inversion finds the inverse of a square matrix B such that when multiplied by the original matrix B, the result is the identity matrix.
The document defines a vector as having both magnitude and direction, represented geometrically by an arrow. It discusses representing vectors algebraically using coordinates, and defines operations like addition, subtraction, and scaling of vectors. Key vector concepts covered include the dot product, which yields a scalar when combining two vectors, and unit vectors, which have a magnitude of 1. Examples are provided of using vectors to solve problems and prove geometric properties.
The document defines vectors and discusses their geometric and algebraic representations. Geometrically, a vector has a magnitude and direction represented by an arrow. Algebraically, a vector in a plane can be represented by its coordinates (a1, a2) and in 3D space by coordinates (a1, a2, a3). Vectors can be added by placing them head to tail, subtracted by reversing one and adding, and scaled by a scalar number. The dot product of two vectors A and B yields a scalar value that geometrically equals the magnitudes of A and B multiplied by the cosine of the angle between them.
Similar to 267 4 determinant and cross product-n (20)
The document introduces matrices and matrix operations. Matrices are rectangular tables of numbers that are used for applications beyond solving systems of equations. Matrix notation defines a matrix with R rows and C columns as an R x C matrix. The entry in the ith row and jth column is denoted as aij. Matrices can be added or subtracted if they are the same size by adding or subtracting the corresponding entries. There are two types of matrix multiplication: scalar multiplication multiplies a matrix by a constant, and matrix multiplication involves multiplying corresponding rows and columns where the number of columns of the left matrix equals the rows of the right matrix.
35 Special Cases System of Linear Equations-x.pptxmath260
The document discusses special cases of systems of linear equations, including inconsistent/contradictory systems where the equations are impossible to satisfy simultaneously, and dependent systems where there are infinitely many solutions. An inconsistent system is shown with equations x + y = 2 and x + y = 3, which has no solution since they cannot both be true. A dependent system is shown with equations x + y = 2 and 2x + 2y = 4, which has infinitely many solutions like (2,0) and (1,1). The row-reduced echelon form (rref) of a matrix is also discussed, which puts a system of equations in a standard form to help determine if it is consistent, dependent, or has
The document discusses conic sections and ellipses. Conic sections are graphs of quadratic equations of the form Ax2 + By2 + Cx + Dy = E, where A and B are not both 0. Their graphs include circles, ellipses, parabolas and hyperbolas. Ellipses are defined as the set of all points where the sum of the distances to two fixed foci is a constant. Ellipses have a center, two axes called the semi-major and semi-minor axes, and radii along the x and y axes called the x-radius and y-radius. The standard form of an ellipse equation is presented.
This document discusses first degree functions and linear equations. It explains that most real-world mathematical functions can be composed of algebraic, trigonometric, or exponential/log formulas. Linear equations of the form Ax + By = C represent straight lines that can be graphed by finding the x- and y-intercepts. If an equation contains only one variable, it represents a vertical or horizontal line. The slope-intercept form y = mx + b is introduced, where m is the slope and b is the y-intercept. Slope is defined as the ratio of the rise over the run between two points on a line.
The document discusses notation and algebra of functions. It defines a function as a procedure that assigns a unique output to each valid input. Most mathematical functions are represented by formulas like f(x) = x^2 - 2x + 3, where f(x) is the name of the function, x is the input variable, and the formula defines the relationship between input and output. New functions can be formed using basic operations like addition, subtraction, multiplication, and division of existing functions. Examples are provided to demonstrate evaluating functions at given inputs and combining functions algebraically.
The document discusses exponents and exponent rules. It defines exponents as the number of times a base is multiplied by 1. It presents rules for multiplying, dividing, and raising exponents. Examples are provided to demonstrate applying the rules, such as using the power-multiply rule to evaluate (22*34)3. Special exponent rules are also covered, such as the 0-power rule where A0 equals 1 when A is not 0. The document provides examples of calculating fractional exponents by first extracting the root and then raising it to the numerator power.
The document discusses functions and their basic language. It defines a function as a procedure that assigns each input exactly one output. It provides examples of functions, such as a license number to name function. It explains that a function must have a domain (set of inputs) and range (set of outputs). Functions can be represented graphically, through tables of inputs and outputs, or with mathematical formulas.
The document discusses using sign charts to solve polynomial and rational inequalities. It provides examples of solving inequalities by setting one side equal to zero, factoring the expression, drawing the sign chart, and determining the solutions from the regions with the appropriate signs. Specifically, it works through examples of solving x^2 - 3x > 4, 2x^2 - x^3/(x^2 - 2x + 1) < 0, and (x - 2)/(2/(x - 1)) < 3.
The document discusses sign charts for factorable formulas. It provides examples of determining the sign (positive or negative) of expressions when evaluated at given values of x by factoring the expressions into their factored forms. The key steps to create a sign chart are: 1) solve for values where the expression is equal to 0, 2) mark these values on a number line, 3) select points in each segment to test the sign, 4) indicate the sign (positive or negative) in each segment based on the testing. Sign charts show the regions where an expression is positive, negative or equal to 0.
The document discusses conic sections, specifically circles and ellipses. It defines an ellipse as the set of points where the sum of the distances to two fixed foci is a constant. An ellipse has a center, two axes (semi-major and semi-minor), and can be represented by the standard form (x-h)2/a2 + (y-k)2/b2 = 1, where (h,k) is the center, a is the x-radius, and b is the y-radius. Examples are provided to demonstrate finding attributes of ellipses from their equations.
This document discusses conic sections and first degree equations. It begins by introducing conic sections as the shapes formed by slicing a cone at different angles. It then covers first degree equations, noting that their graphs are straight lines that can be written in the form of y=mx+b. Specific examples of first degree equations and their graphs are shown. The document ends by introducing the four types of conic sections - circles, ellipses, parabolas, and hyperbolas - and how graphs of second degree equations can represent these shapes.
The document discusses calculating the slope of a curve between two points (x, f(x)) and (x+h, f(x+h)) using the difference quotient formula. It defines the difference quotient as (f(x+h) - f(x))/h, where h is the difference between x and x+h. An example calculates the slope between the points (2, f(2)) and (2.2, f(2.2)) for the function f(x) = x^2 - 2x + 2, finding the slope to be 0.44.
The document discusses various transformations that can be performed on graphs of functions, including vertical translations, stretches, and compressions. Vertical translations move the entire graph up or down by adding or subtracting a constant to the function. Stretches elongate or compress the graph vertically by multiplying the function by a constant greater than or less than 1, respectively. These transformations can be represented by modifying the original function in a way that corresponds to the geometric transformation of its graph.
14 graphs of factorable rational functions xmath260
The document discusses graphs of rational functions. It defines rational functions as functions of the form R(x) = P(x)/Q(x) where P(x) and Q(x) are polynomials. It describes how vertical asymptotes occur where the denominator Q(x) is zero. The graph runs along either side of vertical asymptotes, going up or down depending on the sign chart. There are four cases for how the graph behaves at a vertical asymptote. The document uses examples to illustrate graphing rational functions and determining vertical asymptotes. It also mentions horizontal asymptotes will be discussed.
The document discusses factorable polynomials and graphing them. It defines a factorable polynomial P(x) as one that can be written as the product of linear factors P(x) = an(x - r1)(x - r2)...(x - rk), where r1, r2, etc. are the roots of P(x). It explains that for large values of |x|, the leading term of P(x) dominates so the graph resembles that of the leading term, while near the roots other terms contribute to the shape of the graph. Examples of graphs of polynomials like x^n are provided to illustrate the approach.
The document discusses quadratic functions and parabolas. It defines quadratic functions as functions of the form y = ax2 + bx + c, where a ≠ 0. It states that the graphs of quadratic equations are called parabolas. Parabolas are symmetric around a central line, with the vertex (highest/lowest point) located on this line. The vertex formula is given as x = -b/2a. Steps for graphing a parabola are outlined, including finding the vertex, another point, and reflections across the central line. An example graphs the parabola y = x2 - 4x - 12, finding the vertex as (2, -16) and x-intercepts as -
The document describes the rectangular coordinate system. Each point in a plane can be located using an ordered pair (x,y) where x represents the distance right or left from the origin and y represents the distance up or down. Changing the x-value moves the point right or left, and changing the y-value moves the point up or down. The plane is divided into four quadrants based on the sign of the x and y values. Reflecting a point across an axis results in another point with the same magnitude but opposite sign for the corresponding coordinate.
The document discusses the basic language of functions. It defines a function as a procedure that assigns each input exactly one output. Functions can be represented by formulas using typical variables like f(x) = x^2 - 2x + 3, where x is the input and f(x) is the output. Functions have a domain, which is the set of all possible inputs, and a range, which is the set of all possible outputs. Functions can be depicted graphically or via tables listing inputs and outputs.
The document discusses inverse functions. An inverse function reverses the input and output of a function. For a function f(x) to have an inverse function f^-1(y), it must be one-to-one, meaning that different inputs map to different outputs. The inverse of f(x) is obtained by solving the original function equation for x in terms of y. Examples show how to determine if a function has an inverse and how to calculate the inverse function. For non one-to-one functions like f(x)=x^2, the inverse procedure is not a well-defined function.
This document discusses two types of log and exponential equations: those that do not require calculators and numerical equations that do require calculators. Equations that do not require calculators can be solved by putting both sides into a common base, consolidating exponents, and dropping the base to solve the resulting equation. For log equations, logs are consolidated on each side first before dropping the log. Two examples demonstrating these solution methods are provided.
Physiology and chemistry of skin and pigmentation, hairs, scalp, lips and nail, Cleansing cream, Lotions, Face powders, Face packs, Lipsticks, Bath products, soaps and baby product,
Preparation and standardization of the following : Tonic, Bleaches, Dentifrices and Mouth washes & Tooth Pastes, Cosmetics for Nails.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
Assessment and Planning in Educational technology.pptxKavitha Krishnan
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2. A matrix is a rectangular table with numbers
or formulas as entries.
Determinant and Cross Product
3. A matrix is a rectangular table with numbers
or formulas as entries. The size of a matrix is r x c
where r is the number of rows and c is the number of
columns.
Determinant and Cross Product
4. A matrix is a rectangular table with numbers
or formulas as entries. The size of a matrix is r x c
where r is the number of rows and c is the number of
columns. Following are examples of matrices:
5 2
4 –1
x 2 –1
6 –2 y2
11 9 –4
Determinant and Cross Product
5 2 –3
4 –1 0
A2X2 = B2X3 = C3X3 =
5. A matrix is a rectangular table with numbers
or formulas as entries. The size of a matrix is r x c
where r is the number of rows and c is the number of
columns. Following are examples of matrices:
5 2
4 –1
x 2 –1
6 –2 y2
11 9 –4
Determinant and Cross Product
Matrices of sizes n x n, such as A and C above,
are called square matrices.
5 2 –3
4 –1 0
A2X2 = B2X3 = C3X3 =
6. A matrix is a rectangular table with numbers
or formulas as entries. The size of a matrix is r x c
where r is the number of rows and c is the number of
columns. Following are examples of matrices:
5 2
4 –1
x 2 –1
6 –2 y2
11 9 –4
Determinant and Cross Product
Matrices of sizes n x n, such as A and C above,
are called square matrices. For each square matrix A,
we extract a number called the determinant of A.
5 2 –3
4 –1 0
A2X2 = B2X3 = C3X3 =
7. A matrix is a rectangular table with numbers
or formulas as entries. The size of a matrix is r x c
where r is the number of rows and c is the number of
columns. Following are examples of matrices:
5 2
4 –1
x 2 –1
6 –2 y2
11 9 –4
Determinant and Cross Product
Matrices of sizes n x n, such as A and C above,
are called square matrices. For each square matrix A,
we extract a number called the determinant of A.
5 2 –3
4 –1 0
A2X2 = B2X3 = C3X3 =
Given a 2x2 matrix A the determinant of A is
a b
c d
det = ad – bc. Hence det(A) = –13.det(A) =
8. a b
c d
det = ad – bc
Determinant and Cross Product
The 2x2 determinant
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
9. a b
c d
det = ad – bc
Determinant and Cross Product
The 2x2 determinant
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
(a, b)
(c, d)
10. a b
c d
det = ad – bc
Determinant and Cross Product
The 2x2 determinant
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
(a, b)
(c, d)
(a+c, b+d)
11. a b
c d
det = ad – bc
Determinant and Cross Product
The 2x2 determinant
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
(a, b)
(c, d)
(a+c, b+d)
i.e. |det(A)| = the area of
12. Determinant and Cross Product
a b
c d
det = ad – bc
The 2x2 determinant
(a, b)
(c, d)
(a+c, b+d)
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
i.e. |det(A)| = the area of
To see this, we dissect the
rectangle that boxes–in the
parallelogram into regions as
shown
13. Determinant and Cross Product
(a+c, b+d)
(a, b)
(c, d)
a b
c d
det = ad – bc
The 2x2 determinant
(a, b)
(c, d)
(a+c, b+d)
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
i.e. |det(A)| = the area of
To see this, we dissect the
rectangle that boxes–in the
parallelogram into regions as
shown
14. Determinant and Cross Product
(a+c, b+d)
(a, b)
(c, d)
a b
c d
det = ad – bc
The 2x2 determinant
(a, b)
(c, d)
(a+c, b+d)
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
i.e. |det(A)| = the area of
To see this, we dissect the
rectangle that boxes–in the
parallelogram into regions as
shown
15. Determinant and Cross Product
(a+c, b+d)
(a, b)
(c, d)
a b
c d
det = ad – bc
The 2x2 determinant
(a, b)
(c, d)
(a+c, b+d)
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
i.e. |det(A)| = the area of
To see this, we dissect the
rectangle that boxes–in the
parallelogram into regions as
shown
.
.
16. Determinant and Cross Product
(a+c, b+d)
(a, b)
(c, d)
a b
c d
det = ad – bc
The 2x2 determinant
(a, b)
(c, d)
(a+c, b+d)
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
i.e. |det(A)| = the area of
To see this, we dissect the
rectangle that boxes–in the
parallelogram into regions as
shown and note that area of
.
.
= – 2(
.
+ + )
17. Determinant and Cross Product
(a+c, b+d)
(a, b)
(c, d)
a b
c d
det = ad – bc
The 2x2 determinant
(a, b)
(c, d)
(a+c, b+d)
gives the signed area of the
parallelogram defined by the
row–vectors (a, b) and (c, d),
i.e. |det(A)| = the area of
To see this, we dissect the
rectangle that boxes–in the
parallelogram into regions as
shown and note that area of
.
.
= – 2(
.
+ + )
= ad – bc (check this.)
18. a b
c d
det = ad – bc
Determinant and Cross Product
The sign of the 2x2 determinant D of the matrix
gives the following information concerning directions.
D =
19. a b
c d
det = ad – bc
i. If D > 0, then the parallelogram
is formed by sweeping u = < a, b>
in a counterclockwise motion,
i.e. to the left of u.
Determinant and Cross Product
The sign of the 2x2 determinant D of the matrix
gives the following information concerning directions.
D =
(a, b)
(c, d)
u
D = ad – bc > 0
20. a b
c d
det = ad – bc
i. If D > 0, then the parallelogram
is formed by sweeping u = < a, b>
in a counterclockwise motion,
i.e. to the left of u.
Determinant and Cross Product
The sign of the 2x2 determinant D of the matrix
gives the following information concerning directions.
D =
(a, b)
(c, d)
(a, b)
(c, d)u
u
D = ad – bc > 0
ii. If D < 0, then the parallelogram
is formed by sweeping u = < a, b>
in a clockwise motion,
i.e. to the right of u.
D = ad – bc < 0
21. a b
c d
det = ad – bc
i. If D > 0, then the parallelogram
is formed by sweeping u = < a, b>
in a counterclockwise motion,
i.e. to the left of u.
Determinant and Cross Product
The sign of the 2x2 determinant D of the matrix
gives the following information concerning directions.
D =
(a, b)
(c, d)
(a, b)
(c, d)u
u
D = ad – bc > 0
ii. If D < 0, then the parallelogram
is formed by sweeping u = < a, b>
in a clockwise motion,
i.e. to the right of u.
D = ad – bc < 0
iii. If D = 0, there is no parallelogram,
It’s deformed to a line.
22. 1 0
0 1
det = +1,
Determinant and Cross Product
Example A.
counterclockwise sweep.
so from i = < 1, 0> to j = <0, 1> is a
23. 1 0
0 1
det = +1,
Determinant and Cross Product
Example A.
counterclockwise sweep.
0 1
1 0
det = –1,
is a clockwise sweep.
so from i = < 1, 0> to j = <0, 1> is a
so from j = <0, 1> to i = <1, 0> is a
24. 1 0
0 1
det = +1,
Determinant and Cross Product
Example A.
counterclockwise sweep.
0 1
1 0
det = –1,
is a clockwise sweep.
Hence we say the matrix
c d
preserves orientation if D > 0,
a b
so from i = < 1, 0> to j = <0, 1> is a
so from j = <0, 1> to i = <1, 0> is a
25. 1 0
0 1
det = +1,
Determinant and Cross Product
Example A.
counterclockwise sweep.
0 1
1 0
det = –1,
is a clockwise sweep.
Hence we say the matrix
c d
preserves orientation if D > 0, i.e. facing in the direction
of <a, b>, the vector <c, d> is to the left, just as in our
R2 if we face the x–axis, the y–axis is to the left,
a b
so from i = < 1, 0> to j = <0, 1> is a
so from j = <0, 1> to i = <1, 0> is a
26. 1 0
0 1
det = +1,
Determinant and Cross Product
Example A.
counterclockwise sweep.
0 1
1 0
det = –1,
is a clockwise sweep.
Hence we say the matrix
c d
preserves orientation if D > 0, i.e. facing in the direction
of <a, b>, the vector <c, d> is to the left, just as in our
R2 if we face the x–axis, the y–axis is to the left,
a b
reverses orientation if D < 0,
so from i = < 1, 0> to j = <0, 1> is a
so from j = <0, 1> to i = <1, 0> is a
27. 1 0
0 1
det = +1,
Determinant and Cross Product
Example A.
counterclockwise sweep.
0 1
1 0
det = –1,
is a clockwise sweep.
Hence we say the matrix
c d
preserves orientation if D > 0, i.e. facing in the direction
of <a, b>, the vector <c, d> is to the left, just as in our
R2 if we face the x–axis, the y–axis is to the left,
a b
reverses orientation if D < 0, i.e. facing in the direction
of <a, b>, <c, d> is to the right which is the mirror
image to our choice of R2.
so from i = < 1, 0> to j = <0, 1> is a
so from j = <0, 1> to i = <1, 0> is a
28. Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
29. a b c
d e f
g h i
det
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
30. a b c
d e f
g h i
det
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
a b c a b
d e f d e
g h i g h
31. a b c
d e f
g h i
det
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
a b c a b
d e f d e
g h i g h
32. a b c
d e f
g h i
det
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
a b c a b
d e f d e
g h i g h
33. a b c
d e f
g h i
det
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
a b c a b
d e f d e
g h i g h
= aei
34. a b c
d e f
g h i
det
= aei + bfg
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
+ +
a b c a b
d e f d e
g h i g h
35. a b c
d e f
g h i
det
= aei + bfg + cdh
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
+ + +
a b c a b
d e f d e
g h i g h
36. a b c
d e f
g h i
det
= aei + bfg + cdh – (ceg
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
+ + + –
a b c a b
d e f d e
g h i g h
37. a b c
d e f
g h i
det
= aei + bfg + cdh – (ceg + afh + bdi)
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
+ + + – – –
a b c a b
d e f d e
g h i g h
38. a b c
d e f
g h i
det
= aei + bfg + cdh – (ceg + afh + bdi)
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
1 2 –1
6 –2 2
3 1 –4
Hence det
1 2 –1 1 2
6 –2 2 6 –2
3 1 –4 3 1
+ + + – – –
a b c a b
d e f d e
g h i g h
39. a b c
d e f
g h i
det
= aei + bfg + cdh – (ceg + afh + bdi)
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
1 2 –1
6 –2 2
3 1 –4
Hence det
1 2 –1 1 2
6 –2 2 6 –2
3 1 –4 3 1
8 12 –6
+ + + – – –
a b c a b
d e f d e
g h i g h
40. a b c
d e f
g h i
det
= aei + bfg + cdh – (ceg + afh + bdi)
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
1 2 –1
6 –2 2
3 1 –4
Hence det
1 2 –1 1 2
6 –2 2 6 –2
3 1 –4 3 1
8 12 –6 6 2 –48
+ + + – – –
a b c a b
d e f d e
g h i g h
41. a b c
d e f
g h i
det
= aei + bfg + cdh – (ceg + afh + bdi)
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
1 2 –1
6 –2 2
3 1 –4
Hence det
1 2 –1 1 2
6 –2 2 6 –2
3 1 –4 3 1
8 12 –6 6 2 –48
= 8 + 12 – 6 – (6 + 2 – 48)
= 54
+ + + – – –
a b c a b
d e f d e
g h i g h
42. a b c
d e f
g h i
det
= aei + bfg + cdh – (ceg + afh + bdi)
Determinant and Cross Product
Let us generalize 2x2 determinants and the associated
geometry to 3x3 determinants.
1 2 –1
6 –2 2
3 1 –4
Hence det
1 2 –1 1 2
6 –2 2 6 –2
3 1 –4 3 1
8 12 –6 6 2 –48
= 8 + 12 – 6 – (6 + 2 – 48)
= 54
+ + + – – –
a b c a b
d e f d e
g h i g h
Following are some of the important geometric and
algebraic properties concerning determinants.
43. Determinant and Cross Product
The geometric significance of the
3x3 determinants is the same as
the 2x2 determinants.
44. a b c
d e f
g h i
If det = D,
Determinant and Cross Product
The geometric significance of the
3x3 determinants is the same as
the 2x2 determinants.
x
z+
<a, b, c>
<d, e, f>
y
<g, h, i>
then D is the signed volume of
D < 0
the parallelepiped, i.e. a squashed box,
formed by the row–vectors of the matrix.
45. a b c
d e f
g h i
If det = D,
Determinant and Cross Product
The geometric significance of the
3x3 determinants is the same as
the 2x2 determinants.
x
z+
<a, b, c>
<d, e, f>
y
<g, h, i>
then D is the signed volume of
D < 0
the parallelepiped, i.e. a squashed box,
formed by the row–vectors of the matrix.
46. a b c
d e f
g h i
If det = D,
Determinant and Cross Product
The geometric significance of the
3x3 determinants is the same as
the 2x2 determinants.
x
z+
<a, b, c>
<d, e, f>
y
<g, h, i>
then D is the signed volume of
i. If D > 0, then the row vectors
<a, b, c> → <d, e, f>→ <g, h, i> form a right handed
system as in the case i → j → k.
D < 0
the parallelepiped, i.e. a squashed box,
formed by the row–vectors of the matrix.
47. a b c
d e f
g h i
If det = D,
Determinant and Cross Product
The geometric significance of the
3x3 determinants is the same as
the 2x2 determinants.
x
z+
<a, b, c>
<d, e, f>
y
<g, h, i>
then D is the signed volume of
i. If D > 0, then the row vectors
<a, b, c> → <d, e, f>→ <g, h, i> form a right handed
system as in the case i → j → k.
ii. If D < 0, then <a, b, c> → <d, e, f>→ <g, h, i>
form a left handed system as in the case i → j → –k.
D < 0
the parallelepiped, i.e. a squashed box,
formed by the row–vectors of the matrix.
49. Determinant and Cross Product
x * *
0 y *
0 0 z
i. det = xyz, hence det
1 0 0
0 1 0
0 0 1
= 1
Here are some important properties of determinants.
50. Determinant and Cross Product
x * *
0 y *
0 0 z
i. det = xyz, hence det
det
1 0 0
0 1 0
0 0 1
= 1
a b c
d e f
g h i
ii. Given that det = D, then
d e f
g h i
=
a b c
g h i
det
a b c
d e f= det
ka kb kc
kd ke kf
kg kh ki
= kD
where k is a constant,
Here are some important properties of determinants.
51. Determinant and Cross Product
x * *
0 y *
0 0 z
i. det = xyz, hence det
det
1 0 0
0 1 0
0 0 1
= 1
a b c
d e f
g h i
ii. Given that det = D, then
d e f
g h i
=
a b c
g h i
det
a b c
d e f= det
ka kb kc
kd ke kf
kg kh ki
= kD
where k is a constant, i.e. stretching an edge of the
box by a factor k, then the volume of the box is
changed by the factor k.
Here are some important properties of determinants.
52. Determinant and Cross Product
3. The determinant changes sign if we swap two rows
in the matrix.
53. Determinant and Cross Product
3. The determinant changes sign if we swap two rows
in the matrix. For example,
if det = D, then
a b c
d e f
g h i
det = –D.
d e f
a b c
g h i
54. Determinant and Cross Product
3. The determinant changes sign if we swap two rows
in the matrix. For example,
Geometrically, this says that if we switch the order of
any two vector, we change the orientation of the
system defined by the row vectors.
if det = D, then
a b c
d e f
g h i
det = –D.
d e f
a b c
g h i
55. Determinant and Cross Product
3. The determinant changes sign if we swap two rows
in the matrix. For example,
Geometrically, this says that if we switch the order of
any two vector, we change the orientation of the
system defined by the row vectors.
if det = D, then
a b c
d e f
g h i
det = –D.
d e f
a b c
g h i
1 0 0
0 1 0
0 0 1
detSo = 1 and
1 0 0
0 0 1
0 1 0
det = –1
since we changed from a right handed system to a
left handed system following the row vectors.
56. Determinant and Cross Product
In fact the sign of the determinant is the algebraic
definition of the right handed system vs. the left handed
system, i.e. a positive determinant means the row
vectors form a right handed system and a negative
determinant means they form a left handed system.
57. Determinant and Cross Product
In fact the sign of the determinant is the algebraic
definition of the right handed system vs. the left handed
system, i.e. a positive determinant means the row
vectors form a right handed system and a negative
determinant means they form a left handed system.
Cross Product
58. Determinant and Cross Product
In fact the sign of the determinant is the algebraic
definition of the right handed system vs. the left handed
system, i.e. a positive determinant means the row
vectors form a right handed system and a negative
determinant means they form a left handed system.
Given two 3D vectors u = <a, b, c>, v = <d, e, f>,
their cross products are defined below
Cross Product
59. Determinant and Cross Product
In fact the sign of the determinant is the algebraic
definition of the right handed system vs. the left handed
system, i.e. a positive determinant means the row
vectors form a right handed system and a negative
determinant means they form a left handed system.
Given two 3D vectors u = <a, b, c>, v = <d, e, f>,
their cross products are defined below
i j k
a b c
d e f
detu x v =
Cross Product
60. Determinant and Cross Product
In fact the sign of the determinant is the algebraic
definition of the right handed system vs. the left handed
system, i.e. a positive determinant means the row
vectors form a right handed system and a negative
determinant means they form a left handed system.
Given two 3D vectors u = <a, b, c>, v = <d, e, f>,
their cross products are defined below
i j k
a b c
d e f
detu x v =
i j k
d e f
a b c
detand v x u =
Cross Product
61. Determinant and Cross Product
In fact the sign of the determinant is the algebraic
definition of the right handed system vs. the left handed
system, i.e. a positive determinant means the row
vectors form a right handed system and a negative
determinant means they form a left handed system.
Given two 3D vectors u = <a, b, c>, v = <d, e, f>,
their cross products are defined below
i j k
a b c
d e f
detu x v =
i j k
d e f
a b c
detand v x u =
Cross Product
The cross product is only defined for two 3D vectors,
the product yield another 3D vector.
62. Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
Determinant and Cross Product
63. i j k
1 2 –1
2 –1 3
det
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
Determinant and Cross Product
64. i j k
1 2 –1
2 –1 3
det
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
Determinant and Cross Product
65. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
Determinant and Cross Product
66. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
= 6i – 2j – k – (4k + i + 3j) or that u x v = 5i – 5j – 5k.
Determinant and Cross Product
67. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
= 6i – 2j – k – (4k + i + 3j) or that u x v = 5i – 5j – 5k.
Determinant and Cross Product
* u x v is a orthogonal to both
u and v in the direction determined
by the right-hand rule.
68. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
= 6i – 2j – k – (4k + i + 3j) or that u x v = 5i – 5j – 5k.
Determinant and Cross Product
* u x v is a orthogonal to both
u and v in the direction determined
by the right-hand rule.
v
u
69. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
= 6i – 2j – k – (4k + i + 3j) or that u x v = 5i – 5j – 5k.
Determinant and Cross Product
* u x v is a orthogonal to both
u and v in the direction determined
by the right-hand rule.
u x v v
u
70. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
= 6i – 2j – k – (4k + i + 3j) or that u x v = 5i – 5j – 5k.
Determinant and Cross Product
* u x v is a orthogonal to both
u and v in the direction determined
by the right-hand rule.
u x v v
u
* The length |u x v| is equal to
the area of the parallelogram
defined by u and v.
71. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
= 6i – 2j – k – (4k + i + 3j) or that u x v = 5i – 5j – 5k.
Determinant and Cross Product
* u x v is a orthogonal to both
u and v in the direction determined
by the right-hand rule.
u x v v
u
* The length |u x v| is equal to
the area of the parallelogram
defined by u and v.
u x v v
u
72. i j k
1 2 –1
2 –1 3
det
6i –2j –k
Example B. Find the cross product of
u = <1, 2, –1>, v = <2, –1, 3 >.
u x v =
i j k
1 2 –1
2 –1 3
i j
1 2
2 –1
4k i 3j
= 6i – 2j – k – (4k + i + 3j) or that u x v = 5i – 5j – 5k.
Determinant and Cross Product
* u x v is a orthogonal to both
u and v in the direction determined
by the right-hand rule.
u x v v
u
* The length |u x v| is equal to
the area of the parallelogram
defined by u and v.
u x v v
u
|u x v| = area of the
74. Cross Products of i, j, and k
Determinant and Cross Product
Since the unit coordinate vectors i, j, and k are
mutually perpendicular, we have the following
relations.
75. Cross Products of i, j, and k
i x j = k
j x k = i
k x i = j
(Forward ijk)
Determinant and Cross Product
i
jk
+
Since the unit coordinate vectors i, j, and k are
mutually perpendicular, we have the following
relations.
76. i
jk
Cross Products of i, j, and k
i x j = k
j x k = i
k x i = j
–
i x k = –j
j x i = –k
k x j = –i
(Forward ijk) (Backward kji)
Determinant and Cross Product
i
jk
+
Since the unit coordinate vectors i, j, and k are
mutually perpendicular, we have the following
relations.
78. Let u, v and w be 3D vectors:
1. u x u = u x 0 = 0
Determinant and Cross Product
Algebra of Cross Product
79. Let u, v and w be 3D vectors:
1. u x u = u x 0 = 0
2. (Orthogonal Property)
u • (v x u) = 0, v • (v x u) = 0
Determinant and Cross Product
Algebra of Cross Product
80. Let u, v and w be 3D vectors:
1. u x u = u x 0 = 0
2. (Orthogonal Property)
u • (v x u) = 0, v • (v x u) = 0
3. (Anti-commutative) u x v = – (v x u)
Determinant and Cross Product
Algebra of Cross Product
81. Let u, v and w be 3D vectors:
1. u x u = u x 0 = 0
2. (Orthogonal Property)
u • (v x u) = 0, v • (v x u) = 0
3. (Anti-commutative) u x v = – (v x u)
4. If k is a scalar, (ku) x v = u x (kv) = k(u x v)
Determinant and Cross Product
Algebra of Cross Product
82. Let u, v and w be 3D vectors:
1. u x u = u x 0 = 0
2. (Orthogonal Property)
u • (v x u) = 0, v • (v x u) = 0
3. (Anti-commutative) u x v = – (v x u)
4. If k is a scalar, (ku) x v = u x (kv) = k(u x v)
5. (Distributive Law)
(u + v) x w = u x w + v x w
u x (v + w) = u x v + u x w
Determinant and Cross Product
Algebra of Cross Product
83. Let u, v and w be 3D vectors:
1. u x u = u x 0 = 0
2. (Orthogonal Property)
u • (v x u) = 0, v • (v x u) = 0
3. (Anti-commutative) u x v = – (v x u)
4. If k is a scalar, (ku) x v = u x (kv) = k(u x v)
5. (Distributive Law)
(u + v) x w = u x w + v x w
u x (v + w) = u x v + u x w
6. (Triple Scalar Product) u•(v x w) =
u
v
w
det
Determinant and Cross Product
Algebra of Cross Product
84. Let u, v and w be 3D vectors:
1. u x u = u x 0 = 0
2. (Orthogonal Property)
u • (v x u) = 0, v • (v x u) = 0
3. (Anti-commutative) u x v = – (v x u)
4. If k is a scalar, (ku) x v = u x (kv) = k(u x v)
5. (Distributive Law)
(u + v) x w = u x w + v x w
u x (v + w) = u x v + u x w
6. (Triple Scalar Product) u•(v x w) =
u
v
w
det
Determinant and Cross Product
Algebra of Cross Product
In particular |u•(v x w)| = volume of the parallelepiped
defined by u, v, and w.
85. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w)
Determinant and Cross Product
86. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
Determinant and Cross Product
87. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
= 2(u x u) – 3(u x w)
Determinant and Cross Product
88. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
= 2(u x u) – 3(u x w)
= 2*0 – 3<0, –8, 0> = <0, 24, 0>
Determinant and Cross Product
89. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
= 2(u x u) – 3(u x w)
= 2*0 – 3<0, –8, 0> = <0, 24, 0>
b. u • (2v x 3w) =
Determinant and Cross Product
90. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
= 2(u x u) – 3(u x w)
= 2*0 – 3<0, –8, 0> = <0, 24, 0>
b. u • (2v x 3w) = u • [6(v x w)]
Determinant and Cross Product
91. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
= 2(u x u) – 3(u x w)
= 2*0 – 3<0, –8, 0> = <0, 24, 0>
b. u • (2v x 3w) = u • [6(v x w)]
= 6[u • (v x w)]
Determinant and Cross Product
92. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
= 2(u x u) – 3(u x w)
= 2*0 – 3<0, –8, 0> = <0, 24, 0>
b. u • (2v x 3w) = u • [6(v x w)]
= 6[u • (v x w)]
= 6 *
u
v
w
det
Determinant and Cross Product
93. Example C. Given that u = <2, 0, 0>, v = <0, 3, 0>,
and w = <0, 0, 4>. Find
a. u x (2u – 3w) = u x (2u) + u x (–3w)
= 2(u x u) – 3(u x w)
= 2*0 – 3<0, –8, 0> = <0, 24, 0>
b. u • (2v x 3w) = u • [6(v x w)]
= 6[u • (v x w)]
= 6 * = 6 * 24 = 144
u
v
w
det
Volume of the box
formed by u,v and w
Determinant and Cross Product