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

The gamma function

  1. Nov 26, 2004 #1
    The definition of this function is
    Gamma(z) = integral(0, inf)(t^(z-1)e^(-t) dt)

    Well, I can't understand what the t stands for. The only parameter is z... Is it an arbitrary number?
  2. jcsd
  3. Nov 26, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Your integrand is a function of TWO variables:
    When you integrate f(z,t) over the t-domain, ([tex]0\leq{t}<\infty[/tex]) , what you are left with, is a function of z alone:
  4. Nov 29, 2004 #3
    I think I get it. Thanks.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook