Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 15 - Differentiation in Several Variables - 15.1 Functions of Two or More Variables - Exercises - Page 763: 5

Answer

Whole xy plane.

Work Step by Step

Since $ f(x,y)=12x-5y $ is a polynomial, then it is defined for all values of $ x $ and $ y $. So the domain of $ f $ is the whole xy-plane.
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