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Help on laplace transforms

  1. Apr 28, 2007 #1
    1. The problem statement, all variables and given/known data

    y''+4y=sin(t)+u (sub pi) * sin(t-pi)
    y(0)=0 y'(0)=0

    2. Relevant equations

    http://img300.imageshack.us/img300/1741/untitledil7.th.jpg [Broken]

    3. The attempt at a solution

    see attached

    sorry, it took forever to put that into equation editor and i didn't want to do it again :biggrin:

    i'm stuck on where to go now. am i doing this correctly so far? please help! thanks :cry:
     

    Attached Files:

    Last edited by a moderator: May 2, 2017
  2. jcsd
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