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

Contour integration of real functions

  1. Jan 28, 2013 #1
    I have a problem with choosing a contour for integration... Can someone explain to me when to use a keyhole contour and when a semi-circle? Thanks...:)
     
    Last edited: Jan 28, 2013
  2. jcsd
  3. Jan 28, 2013 #2
    Use keyhole when you need to avoid singularities.
     
  4. Jan 28, 2013 #3
    Singularities on real axis?
     
  5. Jan 28, 2013 #4
    Yes. Like (sin x)/x.
     
  6. Jan 28, 2013 #5
    Thanks man.:)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook