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Homework Help: Integral Issue (Y-Axis) Solve for Volume

  1. Sep 3, 2011 #1
    Integral Issue (Y-Axis) Solve for Volume :)

    1. The problem statement, all variables and given/known data
    [PLAIN]http://img88.imageshack.us/img88/7091/unled4mo.jpg [Broken]

    2. Relevant equations

    V=
    pi [itex]\int[/itex] [itex]^{18}_{0}[/itex] 1/4 (19-y)[itex]^{2}[/itex]dy
    3. The attempt at a solution

    I've tried it a couple times, gotten 243/2 Pi




    Any and all help would be much appreciated :)

    I'm really having trouble integrating the equation above, im absolutely terrible with integrals so any help with that would be ideal
     
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Sep 3, 2011 #2
    Re: Integral Issue (Y-Axis) Solve for Volume :)

    There are two ways to integrate this (I'm not sure what would be easier for you). Try foiling out your expression or using a substitution. Can you be more specific as to what you are having trouble with?

    You will certainly need to recall the power antidifferentiation rule for this problem.
     
  4. Sep 3, 2011 #3
    Re: Integral Issue (Y-Axis) Solve for Volume :)

    just googled that because i wasn't sure what it was.

    https://pantherfile.uwm.edu/jrb5/www/antidiff1.html


    Thanks, i'll try it with this new-found knowledge :)
     
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