Since f'(x) > 0 when x << 0 (x * -1) and f'(x) < 0 when x > 0 (x 1), f is increasing on the intervals (--, -1) and and decreasing on the interväls (0, 1) and (F) The only critical number is x = 0. Since f' changes from positive to negative at is a local maximum by the First Derivative Test.

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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E. f'lxl= 4X(x-1)-2x²•2X
(xー1
4x
%3D
(火+げ(メーパ)
Transcribed Image Text:E. f'lxl= 4X(x-1)-2x²•2X (xー1 4x %3D (火+げ(メーパ)
Since f'(x) >0 when x < 0 (x * -1) and f'(x) < 0 when x > 0 (x 1), f is increasing on the intervals
(-, -1) and
and decreasing on the intervals (0, 1) and
(F) The only critical number is x = 0. Since f' changes from positive to negative at
is a local maximum by the First Derivative Test.
Transcribed Image Text:Since f'(x) >0 when x < 0 (x * -1) and f'(x) < 0 when x > 0 (x 1), f is increasing on the intervals (-, -1) and and decreasing on the intervals (0, 1) and (F) The only critical number is x = 0. Since f' changes from positive to negative at is a local maximum by the First Derivative Test.
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