Answer
$I$
Work Step by Step
The equation $y^{2}=x^{2}+2z^{2}$ is a double cone , and the only double cone graph can be seen in Figure $I$.
Calculus 8th Edition
by Stewart, James
Published by
Cengage
ISBN 10:
1285740629
ISBN 13:
978-1-28574-062-1
Chapter 12 - Vectors and the Geometry of Space - 12.6 Cylinders and Quadric Surfaces - 12.6 Exercises - Page 880: 26
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