Calculus, 10th Edition (Anton)

Published by Wiley
ISBN 10: 0-47064-772-8
ISBN 13: 978-0-47064-772-1

Chapter 3 - The Derivative In Graphing And Applications - 3.1 Analysis Of Functions I: Increase, Decrease, and Concavity - Exercises Set 3.1 - Page 195: 14

Answer

True

Work Step by Step

An inflection point occurs where the concavity changes sign. If $f'$ is increasing on $[0,1]$, it means $f''(x)\geq 0$ on $[0,1]$ and if $f'$ is decreasing on $[1,2]$, it means $f''(x)\leq 0$ on $[1,2]$. So the concavity changes sign at $x=1$, which means $x=1$ is an inflection point. The statement is true.
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