Calculus: Early Transcendentals 8th Edition

Published by Cengage Learning
ISBN 10: 1285741552
ISBN 13: 978-1-28574-155-0

Chapter 16 - Section 16.6 - Parametric Surfaces and Their Areas - 16.6 Exercise - Page 1120: 18

Answer

Plot $II$

Work Step by Step

Let us set $v$ as constant, say $k$. $x=sinu$, $y=cosu sink$, $z=sink$ Let us name $sink$ as $a$ $x=sinu$, $y=acosu$, $z=a$ This is an ellipse parallel to $xy$ plane. Only Plot $II$ has such grid curves.
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