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Math Help - dirac delta functions...

  1. #1
    Senior Member
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    dirac delta functions...

    ok im doing this problem and its not working out for me and i was wondering if someone could look it over...let y(0)=1 and y'(0)=0






    and so i got...



    according to my text, this is wrong...

    any help would be appreciated..

    thanks in advance
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  2. #2
    A Plied Mathematician
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    I don't think you're taking the LT of the LHS correctly. The second derivative has two terms, one of which vanishes. The first derivative also has one term that does NOT vanish.
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  3. #3
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    yeah i caught it, i see my mistake....the numerator should have a +4 on the end...

    thanks
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  4. #4
    A Plied Mathematician
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    You're welcome!
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