Answer
$x=\pm3$
Work Step by Step
$e^{x^{2}}=e^{9}$
Simply use the one-to-one property to solve this equation.
$x^{2}=9$
Take the square root of both terms:
$\sqrt{x^{2}}=\sqrt{9}$
$x=\pm3$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 4 - Section 4.5 - Exponential and Logarithmic Functions - 4.5 Exercises - Page 368: 4
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