Show that if f is differentiable and f'(x) > 0 on (a, 6), then f is strictly increasing provided there is no subinterval (c, d) with c< d on which f' is identically zero.

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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Show that if f is differentiable and f'(x) > 0 on (a, b), then f
is strictly increasing provided there is no subinterval (c, d) with
c< d on which f' is identically zero.
Transcribed Image Text:Show that if f is differentiable and f'(x) > 0 on (a, b), then f is strictly increasing provided there is no subinterval (c, d) with c< d on which f' is identically zero.
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