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factorial_function [2015/11/14 03:26] nikolaj |
factorial_function [2015/11/14 03:33] ben |
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=== Discussion === | === Discussion === | ||
- | Thinking of $n!=\frac{{\mathrm d}^n}{{\mathrm d}x}x^n$ and Fermat theory, I though there must be an expression for $n!$ which is more algebraic and indeed I found | + | Thinking of $n!=\left.\frac{{\mathrm d}^n}{{\mathrm d}x^n}\right|_{x=0}x^n$ and Fermat theory, I though there must be an expression for $n!$ which is more algebraic and indeed I found |
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