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Math Help - INverse Laplace Transform Second Shifting!

  1. #1
    Member zangestu888's Avatar
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    INverse Laplace Transform Second Shifting!

    Find the inverse laplace transform of

    e^{-pi(s)}/(s^2+9)<br />
    what i think it is,

    (1/3)u(t-pi)sin3t

    am not sure if am gettin the concept of this second shifting or should it be
    1/3*u(t+pi)sin3(t+pi)

    any help will be appreciated thanks, if someone can please expain to me so i get the concep of the second shift in my head thanks!
    Last edited by mr fantastic; August 9th 2009 at 04:18 AM. Reason: Second time I've had to correct the spelling of shifting.
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    Quote Originally Posted by zangestu888 View Post
    Find the inverse laplace transform of

    e^{-pi(s)}/(s^2+9)<br />
    what i think it is,

    (1/3)u(t-pi)sin3t

    am not sure if am gettin the concept of this second shifting or should it be
    1/3*u(t+pi)sin3(t+pi)

    any help will be appreciated thanks, if someone can please expain to me so i get the concep of the second shift in my head thanks!
    Please state the second shift theorem you've been given. Then please state the difficulty you're having in applying it.
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