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Volume integration

  1. Oct 21, 2006 #1
    hi guys. i just need help setting up the integral for the following two problems.

    1. find the volume of the solid obtained by rotating the region by the given area about the specified lines.
    y= 1/ x^3, y= 0, x=3, x=4 ABOUT x=-3

    so i have integral from 3 to 4 of [(-3)^2 - (1/x^3)^2] dx

    is that right?


    2. find the volume of the solid obtained by rotating the region bounded by the given curves about specified line
    y=x^2, x=y^2 about the line x=-3

    so i have integral from 0 to 1 of [(3-x^2)^2 - (3-Sqrt(x))^2] dx


    is that even close to right?

    thank you
     
  2. jcsd
  3. Oct 22, 2006 #2

    HallsofIvy

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