Let S be the solid obtained by rotating the region shown in the figure below about the y-axis.   Explain why it is difficult to use the washer method to find the volume V of S. What are the circumference c and height h of a typical cylindrical shell? Use the method of cylindrical shells to find the volume V of S.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Question

Let S be the solid obtained by rotating the region shown in the figure below about the y-axis.

 

Explain why it is difficult to use the washer method to find the volume V of S.
What are the circumference c and height h of a typical cylindrical shell?
Use the method of cylindrical shells to find the volume V of S.
y
10
8
6
4
2
y = 8 x(x - 2)²
2
X
Transcribed Image Text:y 10 8 6 4 2 y = 8 x(x - 2)² 2 X
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