Answer
$x=\pm3$
Work Step by Step
$e^{x^2-9}=1=e^0$. We know that if $a\ne1,-1$, then $a^x=a^y\longrightarrow x=y$, hence here: $x^2-9=0\\x^2=9\\x=\pm3$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 9 - Polar Coordinates; Vectors - Chapter Review - Cumulative Review - Page 637: 1
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