Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.8 - Inverse Functions - Exercise Set - Page 271: 76

Answer

The function has no inverse. (refer to the step-by-step part below for the explanation and the graph)

Work Step by Step

Use a graphing utility to graph the function. (refer to the attached image below for the graph) A number of horizontal lines (such as ($y=0$) will pass through the graph at exactly two points. This means that the graph fails the horizontal line test, therefore the function has no inverse function.
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