Let f(x) = x – sin x. (a) Show that f increases on (-o, 00). Use the result in part (a) to show that sin x < x on (0, 0) and (b) sin x > x on (-0,0).

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.3: Rates Of Change And Behavior Of Graphs
Problem 2SE: If a functionfis increasing on (a,b) and decreasing on (b,c) , then what can be said about the local...
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3. Let f(x) = x – sin x.
(a)
Show that f increases on (-o, 0).
(b)
Use the result in part (a) to show that sin x < x on (0, 0) and
sin x > x on (-o,0).
Transcribed Image Text:3. Let f(x) = x – sin x. (a) Show that f increases on (-o, 0). (b) Use the result in part (a) to show that sin x < x on (0, 0) and sin x > x on (-o,0).
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