Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Dirac delta functions integration

  1. Dec 3, 2006 #1
    I can't figure out how to integrate this:

    [tex]
    \int_{0}^{\infty} \frac{x}{\sqrt{m^2+x^2}}sin(kx)sin(t\sqrt{m^2+x^2}) dx
    [/tex]

    m, k and t are constants.

    The book has for m = 0, the solution is some dirac delta functions.
     
    Last edited: Dec 3, 2006
  2. jcsd
  3. Dec 3, 2006 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Hmm..I doubt you can find an exact solution for this.

    At first glance, the stationary phase approximation might yield some result.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook