Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 7: Transcendental Functions - Section 7.1 - Inverse Functions and Their Derivatives - Exercises 7.1 - Page 372: 3

Answer

Not one-to-one.

Work Step by Step

By using the horizontal line test, since $y=2$ intersects the graph of $f(x)$ at $x=\pm1$, then $f(x) $ is not one-to-one.
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