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LIMITS
Chapter 1
CALCULUS 1 Samar College Galina V. Panela
Brief History on Calculus:
• It is a branch of mathematics which
started to develop in the 17th century.
• Sir Isaac Newton and Wilhelm Leibniz
created calculus independently of each
other and about the same time.
CALCULUS 1 Samar College Galina V. Panela
Brief History on Calculus:
• The word calculus is derived from the
Latin word for stone or pebble.
• Calculus roughly means a “method of
calculation”
CALCULUS 1 Samar College Galina V. Panela
FUNCTIONAL NOTATION
Lesson 1.1
CALCULUS 1 Samar College Galina V. Panela
Concept of Function:
• A function is a certain law of
correspondence,
• It is generally associated with a
formula.
• Like the formula of the area of the circle
𝐴 = 𝜋𝑟2
. We say that A is a function of r
and in symbol, we write 𝐴 = 𝑓(𝑟).
CALCULUS 1 Samar College Galina V. Panela
Concept of Function:
• In general, if there is a relation
between two variables x and y such
that each value of x corresponds to a
value of y, then we say, y is a function
of x.
𝑦 = 𝑓(𝑥)
CALCULUS 1 Samar College Galina V. Panela
Concept of Function:
This concept may be extended to
relations between more than two
variables such that if
𝑧 = 𝑓 𝑥, 𝑦
then the value of z is determined when x
and y are given.
CALCULUS 1 Samar College Galina V. Panela
Example:
Express the perimeter P of the
rectangle as a function of the length x
of one side if the area of the rectangle
is 10 square meters.
CALCULUS 1 Samar College Galina V. Panela
Exercises:
Evaluate the function, 𝑓 𝑥 = 2𝑥2
− 4𝑥 + 2, if
• 𝑓 −10
• 𝑓 𝑦2 + 8
• 𝑓 𝑥 + ∆𝑥
• 𝑓 𝑥 + 1 − 𝑓(𝑥 − 1)
CALCULUS 1 Samar College Galina V. Panela
Exercises:
Express the area of an equilateral triangle
as a function of its side x.
If 𝑓 𝑥 = 𝑥2 + 1, find
𝑓 𝑥+ℎ −𝑓(𝑥)
ℎ
, where h ≠ 0.
If f(𝑥)
4
𝑥+5
and 𝑔 𝑥 = 𝑥2
− 3, find f(g(x)) and
g(f(x)).
CALCULUS 1 Samar College Galina V. Panela

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Functional Notations

  • 1. LIMITS Chapter 1 CALCULUS 1 Samar College Galina V. Panela
  • 2. Brief History on Calculus: • It is a branch of mathematics which started to develop in the 17th century. • Sir Isaac Newton and Wilhelm Leibniz created calculus independently of each other and about the same time. CALCULUS 1 Samar College Galina V. Panela
  • 3. Brief History on Calculus: • The word calculus is derived from the Latin word for stone or pebble. • Calculus roughly means a “method of calculation” CALCULUS 1 Samar College Galina V. Panela
  • 4. FUNCTIONAL NOTATION Lesson 1.1 CALCULUS 1 Samar College Galina V. Panela
  • 5. Concept of Function: • A function is a certain law of correspondence, • It is generally associated with a formula. • Like the formula of the area of the circle 𝐴 = 𝜋𝑟2 . We say that A is a function of r and in symbol, we write 𝐴 = 𝑓(𝑟). CALCULUS 1 Samar College Galina V. Panela
  • 6. Concept of Function: • In general, if there is a relation between two variables x and y such that each value of x corresponds to a value of y, then we say, y is a function of x. 𝑦 = 𝑓(𝑥) CALCULUS 1 Samar College Galina V. Panela
  • 7. Concept of Function: This concept may be extended to relations between more than two variables such that if 𝑧 = 𝑓 𝑥, 𝑦 then the value of z is determined when x and y are given. CALCULUS 1 Samar College Galina V. Panela
  • 8. Example: Express the perimeter P of the rectangle as a function of the length x of one side if the area of the rectangle is 10 square meters. CALCULUS 1 Samar College Galina V. Panela
  • 9. Exercises: Evaluate the function, 𝑓 𝑥 = 2𝑥2 − 4𝑥 + 2, if • 𝑓 −10 • 𝑓 𝑦2 + 8 • 𝑓 𝑥 + ∆𝑥 • 𝑓 𝑥 + 1 − 𝑓(𝑥 − 1) CALCULUS 1 Samar College Galina V. Panela
  • 10. Exercises: Express the area of an equilateral triangle as a function of its side x. If 𝑓 𝑥 = 𝑥2 + 1, find 𝑓 𝑥+ℎ −𝑓(𝑥) ℎ , where h ≠ 0. If f(𝑥) 4 𝑥+5 and 𝑔 𝑥 = 𝑥2 − 3, find f(g(x)) and g(f(x)). CALCULUS 1 Samar College Galina V. Panela