Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.1 Inverse Functions - 4.1 Exercises - Page 416: 29



Work Step by Step

A function $f$ is a one-to-one function if different values of the domain correspond to different values of the range. ------- Given that $f(x)=c$, for some constant c, we take any two different values from the domain, say 0 and 1, and find that $f(0)=c,$ $f(1)=c$, that is, that they have same function values. So, f is not a one-to-one function.
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