Several approximations for n! have recently appeared in the literature. We show here how these approximations can be derived by expansion of certain polynomials in inverse powers of n and comparison with Stirling’s asymptotic series. Some new approximations are also given. The same procedure is applied to generate approximations for the ratio of two gamma functions.
|Number of pages||7|
|Journal||Applied Mathematical Sciences|
|Publication status||Published - 2011|
- Factorial function
- Asymptotic expansion