University Calculus: Early Transcendentals (3rd Edition)

Published by Pearson
ISBN 10: 0321999584
ISBN 13: 978-0-32199-958-0

Chapter 1 - Section 1.6 - Inverse Functions and Logarithms - Exercises - Page 48: 7

Answer

Not one-to-one.

Work Step by Step

According to the Horizontal Line Test, a function is one-to-one if and only if every horizontal line intersects the graph at at most one point. Here, the test fails at the horizontal line of $y=3$, so the function is not one-to-one.
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