Results 1 to 2 of 2

Math Help - Finding Volumes Using Washer Method

  1. #1
    Newbie
    Joined
    Apr 2011
    Posts
    1

    Finding Volumes Using Washer Method

    I have a problem trying to figure this one out. The questions basically asks for the volume of a solid using the washer method with these boundaries: x = 2, x + y = 4, and y = 1/2x^2 - 8, where the solid is revolved about x = -3. I have the solid drawn out but I'm not sure how to set up the integration. Thanks for the help.

    Or should I use the cylindrical shell method?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,404
    Thanks
    1293
    I would start by translating all the boundaries by 3 units up, so that you have the same region, but being rotated around the x axis. Then you can use cylindrical shells.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Volumes of Revolution Question (Washer Method)
    Posted in the Calculus Forum
    Replies: 3
    Last Post: February 15th 2010, 05:34 PM
  2. Washer Method
    Posted in the Calculus Forum
    Replies: 11
    Last Post: January 28th 2010, 02:24 PM
  3. Replies: 2
    Last Post: April 19th 2009, 09:50 AM
  4. finding volume by the washer method
    Posted in the Calculus Forum
    Replies: 2
    Last Post: April 12th 2009, 04:43 PM
  5. Washer Method
    Posted in the Calculus Forum
    Replies: 4
    Last Post: April 6th 2008, 03:24 PM

Search Tags


/mathhelpforum @mathhelpforum