Mean Value Theorem

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.3: The Natural Exponential Function
Problem 52E
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59. Generalizing the Mean Value Theorem for Integrals Suppose f and g are
continuous on [a, b] and let
h(x) = (x − b) ſª f(t) dt + (x -
[
·b
- a) g(t) dt.
a. Use Rolle's Theorem to show that there is a number c in (a, b) such
that
[ f(t) dt + [*g(t) dt = f(c)(b − c) + g(c)(c − a),
which is a generalization of the Mean Value Theorem for Integrals.
b. Show that there is a number c in (a, b) such that
Sf(t) dt = f(c)(b - c).
c. Use a sketch to interpret part (b) geometrically.
d. Use the result of part (a) to give an alternative proof of the Mean
Value Theorem for Integrals.
Transcribed Image Text:59. Generalizing the Mean Value Theorem for Integrals Suppose f and g are continuous on [a, b] and let h(x) = (x − b) ſª f(t) dt + (x - [ ·b - a) g(t) dt. a. Use Rolle's Theorem to show that there is a number c in (a, b) such that [ f(t) dt + [*g(t) dt = f(c)(b − c) + g(c)(c − a), which is a generalization of the Mean Value Theorem for Integrals. b. Show that there is a number c in (a, b) such that Sf(t) dt = f(c)(b - c). c. Use a sketch to interpret part (b) geometrically. d. Use the result of part (a) to give an alternative proof of the Mean Value Theorem for Integrals.
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