Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 3 - Quadratic Functions - Strengthen Your Understanding - Page 130: 12



Work Step by Step

Take the parabola $y=x^2$, which is concave up. The rate of change of the parabola becomes more positive for all positive $x$ and less negative for all negative $x$. However, there is a minimum point at $x=0$, not a maximum point. This disproves the statement.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.