Answer
$D=\{(x,y)\in\mathbb{R}^2|x\ge3y\}$
Work Step by Step
The value inside the quartic root must be greater than or equal to 0. Therefore, the domain is
$D=\{(x,y)\in\mathbb{R}^2|x\ge3y\}$.
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: 8
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