about the y axis, which integral below giv area?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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4. If the curve y = In x between x = 1 and x = e is rotated
about the y axis, which integral below gives the surface
area?
In x
2n fi dx
2п xу1
n f x/1 + dx
V1+x?
А.
В.
2n f xVI + x² dx
2n f° In xv1 + x² dx
C.
D.
2n x1 - dx
O E.
Transcribed Image Text:4. If the curve y = In x between x = 1 and x = e is rotated about the y axis, which integral below gives the surface area? In x 2n fi dx 2п xу1 n f x/1 + dx V1+x? А. В. 2n f xVI + x² dx 2n f° In xv1 + x² dx C. D. 2n x1 - dx O E.
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