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: 72

Answer

The horizontal line test is used to determine the functions which have an inverse.

Work Step by Step

A function $f$ has an inverse that is a function, ${{f}^{-1}}$ , if there is no horizontal line that intersects the graph of the function $f$ at more than one point.
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