Answer
$f(x) = x$
Work Step by Step
A function $f$ is called a one-to-one function if every value in the range ($y$ value) comes from only one unique $x$-value. The function $f(x) = x$ fulfills said requirements.
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
Published by
Pearson
ISBN 10:
0321947347
ISBN 13:
978-0-32194-734-5
Chapter 1 - Functions - 1.3 Inverse, Exponential, and Logarithmic Functions - 1.3 Exercises - Page 35: 2
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