## Calculus (3rd Edition)

Published by W. H. Freeman

# Chapter 4 - Applications of the Derivative - 4.4 The Shape of a Graph - Preliminary Questions - Page 194: 1

(a)

#### Work Step by Step

Since $f$ is concave up, then $f''$ is positive and this means that $f'$ is increasing. So, (a) is the right answer.

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