Suppose that f has continuous derivative and is twice differentiable in R. Suppose that f(a) = f(b) = 0. Show that for every x E (a,b), there is § E (a,b) such that f"(€) (æ – a)(x – b). f(x) = 2

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.
Chapter4: Calculating The Derivative
Section4.CR: Chapter 4 Review
Problem 5CR: Determine whether each of the following statements is true or false, and explain why. The chain rule...
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Suppose that f has continuous derivative and is twice differentiable in R. Suppose that f(a) = f(b) =
= 0. Show
that for every x E (a, b), there is E (a, b) such that
f"(£),
(x – a) (x – 6).
f(æ) =
2
Hint: let k = f(x)/(x – a)(x – b); consider the function F(t) = f(t) – k(x – a)(x – b) and use the first
exercise.
Transcribed Image Text:Suppose that f has continuous derivative and is twice differentiable in R. Suppose that f(a) = f(b) = = 0. Show that for every x E (a, b), there is E (a, b) such that f"(£), (x – a) (x – 6). f(æ) = 2 Hint: let k = f(x)/(x – a)(x – b); consider the function F(t) = f(t) – k(x – a)(x – b) and use the first exercise.
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