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Math Help - The last Laplace problem

  1. #1
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    The last Laplace problem

    This is similar to others I have posted, but I'm sorry, I really just don't quite get it.

    Determine the inverse Laplace transform of f(x) where
    L{F(t)} = F(s) = 2(s^3)/((s^4) - 81)
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  2. #2
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    Quote Originally Posted by Hollysti View Post
    This is similar to others I have posted, but I'm sorry, I really just don't quite get it.

    Determine the inverse Laplace transform of f(x) where
    L{F(t)} = F(s) = 2(s^3)/((s^4) - 81)
    2s^3/[(s^2+9)(s^2-9)]

    Partial fractions in the following form,

    [As+B]/(s^2+9) + [Cs+D]/(s^2-9)
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