College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 2, Functions - Section 2.8 - One-to-One Functions and their Inverses - 2.8 Exercises - Page 262: 35

Answer

$f^{-1}(f^{-1}(1))$ = 2

Work Step by Step

First find where f(x) = 1. Since the function is one-to-one, f(6) = 1. Therefore $f^{-1}(f^{-1}(1))$ = $f^{-1}(6)$ Then find where f(x) = 6. Since the function is one-to-one, f(2) = 6. Therefore Therefore $f^{-1}(f^{-1}(1))$ = $f^{-1}(6)$ = 2
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