Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 2 - Nonlinear Functions - 2.5 Logarithmic Functions - 2.5 Exercises - Page 99: 70


$D = (-\infty, -3)\cup(3,+\infty)$

Work Step by Step

The domain of $f(x) = \log (x^{2} -9) $ consists of all x for which $x^{2} -9\gt 0$ Solving the inequality for x we have $x \lt -3$ or $x \gt 3$ $D = (-\infty, -3)\cup(3,+\infty)$
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