(b) Let f [a, b] → R be a function which is continuous on [a, b] and differentiable on : (a, b). Show that the function F(x) = f f(t) dt is increasing on [a, b] if and only if f(t) ≥ 0 on [a, b].

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter9: Multivariable Calculus
Section9.2: Partial Derivatives
Problem 48E
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(b) Let f: [a, b] →→ R be a function which is continuous on [a, b] and differentiable on
(a, b). Show that the function F(x) = f f(t) dt is increasing on [a, b] if and only
if f(t) ≥ 0 on [a, b].
Transcribed Image Text:(b) Let f: [a, b] →→ R be a function which is continuous on [a, b] and differentiable on (a, b). Show that the function F(x) = f f(t) dt is increasing on [a, b] if and only if f(t) ≥ 0 on [a, b].
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