Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1801-1807 |
| Number of pages | 7 |
| Journal | Applied Mathematical Sciences |
| Volume | 5 |
| Issue number | 37-40 |
| Publication status | Published - 2011 |
Keywords
- Factorial function
- Asymptotic expansion
- Approximations