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Compute causal function using integration by parts

  1. Sep 12, 2014 #1
    1. The problem statement, all variables and given/known data
    sadsd.png


    I stuck on, when the question as for integration by parts method. Need advice
     
  2. jcsd
  3. Sep 13, 2014 #2

    NascentOxygen

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    Staff: Mentor

    Hi majdi. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

    The line with ∫ T.sin3(t-T).dT is where you need to perform integration by parts, in order to get the next line.

    How did you go from that line to the next? (BTW, that is the right answer after you evaluate that integral).

    NB: I have forgotten convolution details, so I'm making no comment on your post before the integral by parts line.
     
    Last edited by a moderator: May 6, 2017
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