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Math Help - differential operator!

  1. #1
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    differential operator!

    an equation of this form:  f(D)y=\exp^{ax}cosax

    pls how do one approach it? thanks.
    Last edited by lawochekel; September 13th 2012 at 07:02 AM. Reason: to correct
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  2. #2
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    Re: differential operator!

    Quote Originally Posted by lawochekel View Post
    an equation of this form:  f(D)y=\exp^{ax}cosax

    pls how do one approach it? thanks.
    Approach what? You haven't actually asked a question!!

    -Dan
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