1. Use cylindrical shells to find the volume of the solid generated when the region enclosed by the given curves is revolved about the x-axis.
a.) x = 4y^2 - y^3 and x=0
b.) y= x^2 ,x = 1 and y= 0
2. Use cylindrical shells to find the volume of the solid generated when the region enclosed by the given curves is revolved about the y-axis.
c.) y =e^x , y=e^-x and x = 1
d.) y = x^3 , x = 3 , y = 0
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