Question
Asked Sep 12, 2019
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Use the method of cylindrical shells to find the volume generated by rotating the region bounded by the given curves about the specified axis.

y = x3, y = 8, x = 0, about x = 5

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Expert Answer

Step 1

Please see the attached diagram on the white board. Please see it crefully and locate the lines, curve and points of interest. Please see the point P (x, y)

x = 5 is the axis of rotation. The cylindrical shell will have a volume, dV = 2πrh.dx

h = 8 - y = 8 - x3

r = 5 - x

Limits of integration will be x = 0 to x = 2

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x 5 30 25 y=x3 20 15 10 y = 8 h P (x, y) r 0 8 2 3 4 6 7

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Step 2

hence, dV = 2π(5 - x)(8 - x3)dx

Pleas...

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r-2 2T (5 x(8)dx AP (40 8x 53+ x4)dx 27T 5x4 2т | 40х — 4? 4 5047 = 5

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Math

Calculus