(a) Find the intervals on which f is increasing or decreasing. (b) Find the local maximum and minimum values of f. (c) Find the intervals of concavity and the inflection points. 9. f(x) = x' - 3x? – 9x + 4 10. f(x) = 2x' - 9x? + 12x – 3 | 11. f(x) = x - 2.x² + 3 12. f(x) = x² + 1· 13. f(x) = sin x + cos x, 0

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.5: Rational Functions
Problem 54E
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Please do number 13
9-14
(a) Find the intervals on which f is increasing or decreasing.
(b) Find the local maximum and minimum values of f.
(c) Find the intervals of concavity and the inflection points.
9. f(x) = x' - 3x2 - 9x + 4
10. f(x) = 2x³ - 9x2 + 12x - 3
I3|
11. f(x) = x - 2x² + 3
12. f(x) =
x² + 11
13. f(x) = sin x + cos x,
0 < x< 2T
14. f(x) = cos'x- 2 sin x, 0<x< 27T
Transcribed Image Text:9-14 (a) Find the intervals on which f is increasing or decreasing. (b) Find the local maximum and minimum values of f. (c) Find the intervals of concavity and the inflection points. 9. f(x) = x' - 3x2 - 9x + 4 10. f(x) = 2x³ - 9x2 + 12x - 3 I3| 11. f(x) = x - 2x² + 3 12. f(x) = x² + 11 13. f(x) = sin x + cos x, 0 < x< 2T 14. f(x) = cos'x- 2 sin x, 0<x< 27T
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