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

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

Chapter 4 - Exponential Functions - 4.3 Graphs of Exponential Functions - Exercises and Problems for Section 4.3 - Exercises and Problems - Page 161: 4


This function is not exponential.

Work Step by Step

The issue is that the rate of change varies for different $x$. Around $x=0$, the function is decreasing. At larger values of $x$, the function is decreasing. This variability of rate of change means that it cannot be exponential.
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