1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Stirling's approximation

  1. Apr 23, 2003 #1
    I was wondering how Stirling's approximation

    x! ~ sqrt(2[pi]x)xxe-x

    was derived. Anyone know?
  2. jcsd
  3. Apr 23, 2003 #2
    This article at Mathworld derives Stirling's approximation step by step. :smile:
  4. Apr 24, 2003 #3
    Thanks for the link, Jeff. It helped a lot :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook