Answer
$f(x) = 2x$ is a function that is one-to-one and positive for $x \geq 0$.
$f(x) = x/2$ is its inverse.
Work Step by Step
To find the inverse of a function switch $x$ with $y$ and solve.
$f(x) = 2x$
$x = 2f(x)$
$x/2 = f(x)$
$f(x) = x/2$
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: 5
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