Answer
$D=\{(x,y)\in\mathbb{R}^2| x\ne -y\}$
Work Step by Step
The denominator cannot be equal to 0. Therefore, $x\ne -y$.
$D=\{(x,y)\in\mathbb{R}^2| x\ne -y\}$
Calculus: Early Transcendentals 9th Edition
by Stewart, James
Published by
Cengage Learning
ISBN 10:
1337613924
ISBN 13:
978-1-33761-392-7
Chapter 14 - Section 14.1 - Functions of Several Variables - 14.1 Exercise - Page 946: 11
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