Consider the equation below. (If an answer does not exist, enter DNE.) f(x) = 2 cos2(x) − 4 sin(x), 0 ≤ x ≤ 2? (a) Find the interval on which f is increasing. (Enter your answer using interval notation.) Find the interval on which f is decreasing. (Enter your answer using interval notation.) (b) Find the local minimum and maximum values of f. (c) Find the inflection points. (x, y) = (smaller x-value) (x, y) = (larger x-value) Find the interval on which f is concave up. (Enter your answer using interval notation.) Find the interval on which f is concave down. (Enter your answer using interval notation.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
Problem 10DE
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Consider the equation below. (If an answer does not exist, enter DNE.)

f(x) = 2 cos2(x) − 4 sin(x),      0 ≤ x ≤ 2?
(a) Find the interval on which f is increasing. (Enter your answer using interval notation.)
 
 

Find the interval on which f is decreasing. (Enter your answer using interval notation.) 
 
 

(b) Find the local minimum and maximum values of f.
 
 

(c) Find the inflection points.
(x, y) =  
 (smaller x-value)

(x, y) =  
 (larger x-value)

Find the interval on which f is concave up. (Enter your answer using interval notation.)
 
Find the interval on which f is concave down. (Enter your answer using interval notation.)
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