Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - Prerequisite Skills - Page 850: 2


$f(a) = b$ and $g(b)=a$

Work Step by Step

The definition of an inverse function is such that the input and output pairs of one function end up being the output and input pairs of the inverse, in that order. Thus function $f$ gives $a->b$ and $g$ gives the opposite $b->a$
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