(By cylindrical shells) The integral that represents the vol- ume of the solid obtained by rotating the region bounded by y = e", y = 2 and r =0 about r = -1 is: In2 A) 27 (r + 1)(2 – e) dr In2 B) 27 (r- 1)(2 – e") d.r In2 C) 27 f (1- r)(2-) dx In2 D) 27 r(2-e) d.r E) 2 y Iny dy

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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(By cylindrical shells) The integral that represents the vol-
ume of the solid obtained by rotating the region bounded by
y = e", y = 2 and r =0 about r =
= -1 is:
%3D
A) 27 (r + 1)(2 – e") dx
In2
B) 27 (r- 1)(2 – e") dr
In2
C) 27 f(1 – r)(2 - ) dx
D) 27 f r(2- e) d.r
E) 27 y Iny dy
Transcribed Image Text:(By cylindrical shells) The integral that represents the vol- ume of the solid obtained by rotating the region bounded by y = e", y = 2 and r =0 about r = = -1 is: %3D A) 27 (r + 1)(2 – e") dx In2 B) 27 (r- 1)(2 – e") dr In2 C) 27 f(1 – r)(2 - ) dx D) 27 f r(2- e) d.r E) 27 y Iny dy
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