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Me this Inverse Laplace Transformation question

  1. Apr 29, 2004 #1
    plz help me this Inverse Laplace Transformation question

    Find the Inverse Laplace Transform of this function

    1/(((s+1)^2)(1+e^(-2s)))

    I just dont know how to separate it , plz help me
     
  2. jcsd
  3. Apr 29, 2004 #2

    Dr Transport

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    Science Advisor
    Gold Member

    try partial fractions
     
  4. Apr 29, 2004 #3
    Yes, But I read a few books about it, still dont get how to do that...
     
  5. Apr 29, 2004 #4
    Maple 9 doesn't want to solve it

    Hi;
    Is it really
    [tex]
    \frac{1}{(s+1)^{2}(1+e^{-2s})}
    [/tex]
    Maple 9 doesn't want to solve it.
    Can you check it just in case.
    Max.
     
    Last edited: Apr 29, 2004
  6. Apr 30, 2004 #5
    yes.... the question is right.
     
  7. Dec 12, 2006 #6
    First put the (1+exp(-2s) factor into the numerator and expand as a series. the function appears to be a series of square wave pulses, which are probably modified by the (s+1)^2 factor.
     
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