Answer
$ x $
Work Step by Step
$ f(x)=b^{x}$ and $ g(x)=\log_{b}x $ are inverse functions.
For inverse functions, $\quad f[g(x)]=x $.
Thus, $ b^{[\log_{b}x]}=x $
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 3 - Section 3.2 - Exponential Functions - Concept and Vocabulary Check - Page 463: 6
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