Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.



Stirling's approximation
Posted:
Jul 11, 1996 1:56 AM


I have seen the following referred to as Stirling's approximation.
n! = sqrt(2*pi*n) * (n/e)^n * e^(1/12n  1/360n^3 + 1/1260n^5) <the '=' should be approximate>.
Is this the correct formula, and if so, does anyone know how it might have been derived?



