Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 14: Partial Derivatives - Section 14.1 - Functions of Several Variables - Exercises 14.1 - Page 787: 32



Work Step by Step

The graph of 3D surface in graph $e$ tells that the surface creates from the middle four upwards waves and four downwards waves are refers to the graph of 2D level curves with a star like clear shape in the middle . Hence, the graph is $e$.
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