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Math Help - nth term differential!

  1. #1
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    nth term differential!

    find the nth differential co-efficient of  -e^{-3x}

    here below i presume is the answer after attempt;
     (-1)^n3^ne^{-3x}

    pls could i be right? thanks.

    what then is the answer to this problem?
    Last edited by lawochekel; April 13th 2012 at 04:14 AM. Reason: update!
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  2. #2
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    Re: nth term differential!

    You can check that is not correct for n=1.
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  3. #3
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    Re: nth term differential!

    The first derivative of -e^{-3x} is 3e^{-3x} which, as biffboy told you, does not fit your formula. Did you forget the leading "-"?
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