http://karpoke.ignaciocano.com/tags/factorial/Recent content in Factorial on Karpoke - Just Another BlogHugo -- 0.159.0esWed, 18 May 2011 14:07:00 +0100http://karpoke.ignaciocano.com/2011/05/18/0-factorial-igual-1-factorial/Wed, 18 May 2011 14:07:00 +0100http://karpoke.ignaciocano.com/2011/05/18/0-factorial-igual-1-factorial/<div> $$ \begin{align*} n! &= n \cdot (n-1) \cdot (n-2) \cdots 3 \cdot 2 \cdot 1 \\ n! &= n \cdot (n-1)! \\ (n-1)! &= \frac{n!}{n} \end{align*} $$ </div> <p>Si <a href="http://www.adonald.btinternet.co.uk/Factor/Zero.html">tomamos</a> $n=1$:</p> <div> $$ \begin{align*} (1-1)! &= \frac{1!}{1} \\ 0! &= 1 \end{align*} $$ </div>