The equation of a curve is given by f(x) = √2x-1. a) Use the definition of derivative to find f'(x). b) Find the equation of the tangent line to the graph of f(x) at x = 5.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section: Chapter Questions
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STANGENT LINE
The equation of a curve is given by f(x) = √2x-1.
a) Use the definition of derivative to find f'(x).
b) Find the equation of the tangent line to the graph of f(x) at x = 5,
15. Given g(x)=x+1-
a) Find g'(x) using the definition of derivative.
b) Hence, determine the equation of the tangent line to the function
at the point (2,3).
Answers:
(Ex in cos x) (2) (6-tanx)(e-3), ⇒ m = -12
d
-2x-3+x²
20
8x4x²20 20x² - 5x²
(2x+8)-2 in x
(2x + 5)
⇒m = -2
1-2 (1+x)
=
⇒
[1+ sin 2x )-2 cos 2x)-2 cos 2x (1-sin 2x)
(1-sin 2x)
⇒ M = 0
[In(x+1)-8] (3 cos 3x) - (sin 3x) (x+1)
"
[in (x+1) 81
⇒ y = x
116) y = -x
(2x-
12b) y =
13b) y =
14b) y =
150) = x
√√2x
113
- 2x + 5
-x + 6
X+
4b) y = - 10x + 2
M = 0.032
= -0.19
338
Transcribed Image Text:dy STANGENT LINE The equation of a curve is given by f(x) = √2x-1. a) Use the definition of derivative to find f'(x). b) Find the equation of the tangent line to the graph of f(x) at x = 5, 15. Given g(x)=x+1- a) Find g'(x) using the definition of derivative. b) Hence, determine the equation of the tangent line to the function at the point (2,3). Answers: (Ex in cos x) (2) (6-tanx)(e-3), ⇒ m = -12 d -2x-3+x² 20 8x4x²20 20x² - 5x² (2x+8)-2 in x (2x + 5) ⇒m = -2 1-2 (1+x) = ⇒ [1+ sin 2x )-2 cos 2x)-2 cos 2x (1-sin 2x) (1-sin 2x) ⇒ M = 0 [In(x+1)-8] (3 cos 3x) - (sin 3x) (x+1) " [in (x+1) 81 ⇒ y = x 116) y = -x (2x- 12b) y = 13b) y = 14b) y = 150) = x √√2x 113 - 2x + 5 -x + 6 X+ 4b) y = - 10x + 2 M = 0.032 = -0.19 338
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