Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.5 Exponential and Logarithmic Equations - 4.5 Exercises: 81

Answer

$4$

Work Step by Step

$\log _{2}\left( \log _{2}x\right) =1\Rightarrow \log _{2}x=2^{1}\Rightarrow x=2^{2^1}=2^{2}=4$
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