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Homework Help: How to perform this integration?

  1. Oct 3, 2007 #1
    1. The problem statement, all variables and given/known data

    The integration:
     

    Attached Files:

  2. jcsd
  3. Oct 3, 2007 #2

    rock.freak667

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    Homework Helper

    ...I can't view the picture...try re-upping it as a jpeg or something so
     
  4. Oct 3, 2007 #3
    I re-upload the pic. The integration is that ∫cos(kx)exp[(-αt)K^2] dkfrom zero to infinity
     

    Attached Files:

  5. Oct 3, 2007 #4

    Dick

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    Science Advisor
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    Convert cos(kx) to (exp(ikx)+exp(-ikx))/2. Combine the exponentials and complete the squares in the exponents. Now do a change of variable and use the known result for exp(-Cx^2).
     
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