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1. Use the washer/disc method to determine the volume of the solid. a) Region enclosed by...

1. Use the washer/disc method to determine the volume of the solid.

a) Region enclosed by y = x^3 - 4x, the x-axis, x = 1, and x = 3 rotated about the x-axis.

b) Region enclosed by y=1/x and y 5/2 - x rotated about the line x = 3.

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