College Algebra 7th Edition

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

Chapter 2, Functions - Chapter 2 Test - Page 272: 13


Yes, $f$ and $g$ are inverse functions by the Inverse Function Property.

Work Step by Step

We know that if $f$ and $g$ are inverse functions of each other, then $f(g(x))=g(f(x))=x$. $\displaystyle f(g(x))=\frac{1}{(\frac{1}{x}+2)-2}=\frac{1}{\frac{1}{x}}=x$ $\displaystyle g(f(x))=\frac{1}{\frac{1}{x-2}}+2=x-2+2=x$ Therefore, $f$ and $g$ are inverse functions.
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