This document discusses conic sections and circles. It defines conic sections as sections obtained when a plane cuts through a circular cone. It defines a circle as the set of all points equidistant from a fixed center point, where the fixed distance is called the radius. The document also mentions that Apollonius, a Greek mathematician, studied conic sections and gave them their names. He believed they should be studied for their mathematical beauty rather than practical applications.
"Harmonic and Other Sequences" presentation includes a brief historical background, problems and solutions to the simplest problems which you may face in your Mathematics.
"Harmonic and Other Sequences" presentation includes a brief historical background, problems and solutions to the simplest problems which you may face in your Mathematics.
Contents:
1. Geometric Sequence
2. Geometric Means
3. Geometric Series
with activities
Feel free to send me a message at regie.naungayan@deped.gov.ph for corrections or other suggestions
A circle is a simple shape in Euclidean geometry. It is the set of all points in a plane that are at a given distance from a given point, the center; equivalently it is the curve traced out by a point that moves so that its distance from a given point is constant.
Pre-Calculus: Conics - Introduction to Conics and Determining & Graphing Circ...Myrrhtaire Castillo
This PowerPoint contains an introduction to conical sections: the conics formed from double-napped circular cone - the Parabola, Hyperbola, Circle, & Ellipse. It also contains the basic parts of Circle. Identifying the standard form of circle's radius and center. Graphing a circle from its standard form. Transforming General Equation of Circle to Standard Form and some of the special cases.
Contents:
1. Geometric Sequence
2. Geometric Means
3. Geometric Series
with activities
Feel free to send me a message at regie.naungayan@deped.gov.ph for corrections or other suggestions
A circle is a simple shape in Euclidean geometry. It is the set of all points in a plane that are at a given distance from a given point, the center; equivalently it is the curve traced out by a point that moves so that its distance from a given point is constant.
Pre-Calculus: Conics - Introduction to Conics and Determining & Graphing Circ...Myrrhtaire Castillo
This PowerPoint contains an introduction to conical sections: the conics formed from double-napped circular cone - the Parabola, Hyperbola, Circle, & Ellipse. It also contains the basic parts of Circle. Identifying the standard form of circle's radius and center. Graphing a circle from its standard form. Transforming General Equation of Circle to Standard Form and some of the special cases.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
2. CONIC SECTIONS
• or simply CONICS are simply the sections
obtained if a plane is made to cut a right
circular cone
• defined as the path of a point which moves so
that its distance from a fixed point (FOCUS) is
in a constant ratio (ECCENTRICITY) to its
distance from a fixed line (DIRECTRIX)
3. APOLLONIUS
• Greek mathematician who wrote the CONIC
SECTIONS
• He gave the names of the conics and believed
that they should be studied for the beauty of
demonstrations rather than for practical
applications
4. Determine the quadrant or axis where
a given point can be located.
1. 𝑨 (𝟒, −𝟓)
2. 𝑹 (𝟎, 𝟗)
3. 𝑽 (−𝟖, −𝟒. 𝟓)
4. 𝑰 ( −
𝟏𝟒
𝟑
, 𝟎)
5. 𝑵 (−𝟕. 𝟖, 𝟓. 𝟓𝟑)
5. Plot the following points in a
rectangular coordinate plane.
1. J (9, -14)
2. O (
𝟑
𝟒
,
𝟏
𝟐
)
3. N1 (-7, -6.5)
4. N2 ( −
𝟏𝟕
𝟑
, 𝟔. 𝟔)
5. A (-4.8, 9.44)
6. Get a sheet of paper and follow the
steps below:
1. Draw a point somewhere in the middle part
of your sheet of paper.
2. Now, using a ruler, mark 20 other points that
are 5 cm from the first point.
3. Compare your work with that of your
seatmates.
4. What shape do you recognize?
7.
8. Activity.
Your grandfather told you that when he was
young, he and his playmates buried some old
coins under the ground, thinking that these
coins will be valuable after several years. He also
remembered that these coins were buried
exactly 4 kilometres from Tree A (see map) and 5
kilometres from Tree B. Where could the coins
possibly be located?
10. DEFINITION OF CIRCLE
• CIRCLE is defined as the set of all points whose
distance from a fixed point called center is
constant. The fixed distance from the center
to any point on the circle is called RADIUS.
13. Illustrative Examples
1. Find the equation of a circle whose point is at
(4, 6) and center at the origin. Sketch the
graph.
Solution: 𝑥2
+ 𝑦2
= 𝑟2
𝑟 = 42 + 62 = 16 + 36 = 52
𝑥2
+ 𝑦2
= 52
2
𝑥2
+ 𝑦2
= 52
14.
15. 2. Find the general equation of a circle with
circle at point (-3, 5) with radius equal to 4.
Sketch the graph.
Solution: 𝒙 − 𝒉 𝟐
+ 𝒚 − 𝒌 𝟐
= 𝒓𝟐
𝑥 − (−3) 2
+ 𝑦 − 5 2
= 42
𝑥 + 3 2
+ 𝑦 − 5 2
=16
𝑥2
+ 6𝑥 + 9 + 𝑦2
− 10𝑦 + 25 = 16
Answer:
𝑥2
+ 𝑦2
+ 6𝑥 − 10𝑦 + 18 =0
16.
17. 3. Reduce the equation 𝑥2
+ 𝑦2
+ 4𝑥 − 6𝑦 − 12 =0
to standard form and find the coordinates of the
center and radius. Sketch the graph.
Solution: 𝑥2
+ 𝑦2
+ 4𝑥 − 6𝑦 − 12 =0
𝑥2
+ 4𝑥 + 4 + 𝑦2
− 6𝑦 + 9 = 12 + 4 + 9
𝑥 + 2 2
+ 𝑦 − 3 2
=25
Answer: 𝑥 + 2 2
+ 𝑦 − 3 2
=52
𝐶 (−2, 3), 𝑟 = 5
18.
19. GAME (CUBING)
Face 2.
Center (2,-5) and
radius 6
Face 3.
Center (-3,6) and
radius 4
Face 6.
Center (-1,7) and
radius 3
Face 1.
Center (1,4) and
radius 8
Face 4.
Center (-4,1) and
radius 7
Face 5.
Center (-4,-5) and
radius 5
Each group will roll a die where
each face have a given centre and
radius. Write the equation in both
standard and general form and
graph the circle in a coordinate
plane.
20. EXERCISES
Reduce the following equations to standard
form and find the center and radius of the circle.
1. 𝑥2
+ 𝑦2
− 4𝑥 + 6𝑦 + 12 = 0
2. 𝑥2
+ 𝑦2
− 8𝑥 + 2𝑦 − 16 = 0
3. 5𝑥2
+ 5𝑦2
+ 10𝑥 − 5𝑦 + 3 = 0
4. 3𝑥2
+ 3𝑦2
− 2𝑥 + 𝑦 − 5 = 0
21. Real-life Problems Involving Circles
1. OCEAN NAVIGATION The beam of a lighthouse can be seen for up to 20 miles.
You are on a ship that is 10 miles east and 16 miles north of the lighthouse.
a. Write an inequality to describe the region lit by the lighthouse beam.
b. Can you see the lighthouse beam?
SOLUTION
a. As shown at the right the lighthouse beam can be
seen from all points that satisfy this inequality:
𝒙𝟐 + 𝒚𝟐 < 𝟐𝟎𝟐
b. Substitute the coordinates of the ship into the
inequality you wrote in part (a).
𝒙𝟐
+ 𝒚𝟐
< 𝟐𝟎𝟐
Inequality from part (a)
𝟏𝟎2 + 𝟏𝟔2 <? 202Substitute for x and y.
100 + 256 <? 400 Simplify.
356 < 400 The inequality is true.
You can see the beam from the ship.
22. 2. OCEAN NAVIGATION Your ship in Example 1 is traveling due south.
For how many more miles will you be able to see the beam?
SOLUTION:
When the ship exits the region lit by the beam,
it will be at a point on the circle 𝑥2 + 𝑦2 = 202.
Furthermore, its x-coordinate will be 10 and its
y-coordinate will be negative. Find the point
(𝟏𝟎, 𝒚) where 𝑦 < 0 on the circle 𝑥2
+ 𝑦2
= 202
.
𝑥2
+ 𝑦2
= 202
. Equation for the boundary
102 + 𝑦2 = 202 Substitute 10 for x.
𝒚 = ± 300 ≈ ±𝟏𝟕. 𝟑 Solve for y.
Since 𝑦 < 0, 𝑦 ≈ −17.3. The beam will be in view as the ship travels
from (10, 16) to (10, o17.3), a distance of |16 − (−17.3)| =
33.3 𝑚𝑖𝑙𝑒𝑠.
23. 3. RADIO SIGNALS The signals of a radio station can be received
up to 65 miles away. Your house is 35 miles east and 56 miles
south of the radio station. Can you receive the radio station’s
signals? Explain.
Solution:
the radio station’s signals can be received from all points that
satisfy this inequality:
𝒙𝟐 + 𝒚𝟐 < 𝟔𝟓𝟐
352
+ (−56)2
<? 652
1225 + 3136 <? 4225
4361 < 4225 the inequality is FALSE.
Thus, the signal will not reach the house.
24.
25. Test
1. Define conics/ conic sections. (3 points)
2. Define circle (2 points)
3. Define radius ( 2 points)
4. He was the Greek mathematician who gave
the names of the conics. (1 point)
5. What was his belief about conics? (1 point)
6. Write the standard form of the equation of a
circle if the center is at the origin.
7. Write the general form of the equation of a
circle.
26. A. Write the standard form of the equation of the
circle with the given radius and whose centre is at
the origin.
8. 3 10. 5 6
9. 7
B. Write the standard form of the equation of the
circle that passes through the given point and
whose centre is at the origin.
11. 0, −10 12. 5, −3
C. 13.Reduce 𝑥2
+ 𝑦2
+ 5𝑥 − 16𝑦 − 10 =0 in
center-radius form. Give the coordinates of the
center and the length of the radius.
27. ASSIGNMENT
Find any circular object (e.g. mouth of a circular
glass, ring) in your home. Measure the radius in
terms of centimetre or inch. Write an equation
for that circular object assuming its center is at
the origin.