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

How to simplify this summation to an incomplete gamma function

  1. Apr 25, 2014 #1
    Could someone please explain why the following sum simplifies to the following?

    [​IMG]

    = [​IMG]

    As far as I can see, this sum does not correlate to the formula for incomplete gamma function as a sum. I'd appreciate any help as the incomplete gamma function is somewhat beyond the scope of my current course.



    P.S. I managed to do it eventually. The key was recognising that n-k could be substituted for k as k varies from 0 to n.
     
    Last edited: Apr 25, 2014
  2. jcsd
  3. May 4, 2014 #2

    Greg Bernhardt

    User Avatar

    Staff: Admin

    I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
     
  4. May 8, 2014 #3

    Attached Files:

    • Sum.JPG
      Sum.JPG
      File size:
      29.4 KB
      Views:
      46
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted
Similar Discussions: How to simplify this summation to an incomplete gamma function
  1. Gamma Function (Replies: 5)

  2. Gamma function (Replies: 1)

Loading...