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Homework Help: Variation of Parameters Question

  1. Nov 12, 2008 #1
    Question is attached as Clipboard01.jpg

    I have tried the use Variation of Parameters to solve this question, but I kept getting wrong answer.
    This is What I get y=(2e^x)(Cos(e^x))+0.5(e^(-x))Cos(e^(-x))-2Sin(e^(-x))
    This is the right answer: y=-Sin(e^(-x))-(e^x)Cos(e^(-x))

    Procedure is shown in the second jpg file
    Can someone help me with this problem?
    Thank You

    Attached Files:

    Last edited: Nov 12, 2008
  2. jcsd
  3. Nov 12, 2008 #2


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    Science Advisor

    Show how you got that answer and we will try to help.
  4. Nov 12, 2008 #3
    I have attached my procedure in scan0002.jpg
  5. Nov 12, 2008 #4
    Can anyone help me? I have math final tomorrow.
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