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Laplace Transform in wolfram

  1. Aug 8, 2010 #1
    What is the Laplace Transform of [tex]f(x)=e^{bx}.sin ax[/tex]?
     
  2. jcsd
  3. Aug 9, 2010 #2
    http://www.wolframalpha.com/input/?i=laplace+transform+of+e^{bx}+sin+ax
     
  4. Aug 9, 2010 #3
    Yes,I have already tried it, but I want to know the process as well.
     
  5. Aug 9, 2010 #4
    You write down the integral as [itex]\int e^{(b-s)x} sin ax dx[/itex] and integrate by parts twice.
     
  6. Aug 10, 2010 #5
    Or you write sin(ax) = (eiax - e-iax)/2i, which is far easier.
     
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