The only standard Maxima functions I know of for simplifying
gamma/factorial are minfactorial and factcomb. They work on the factorial
form, but do not do anything useful with your example. To convert from
gamma to factorial, use makefact.
You can of course add any transformations you like using Maxima's
pattern-matching functionality<http://www.ma.utexas.edu/maxima/maxima_35.html>;.
If you build a generally useful library of transformations for gamma or
other special functions, consider contributing it back to the Maxima
community!
-s
On Fri, Mar 22, 2013 at 11:24 AM, Jean-Claude Arbaut <arbautjc at gmail.com>wrote:
> Hello all,
>
> Is it possible to simplify gamma(x)*gamma(1-x) ?
> More generally, are there functions to simplify expressions involving
> "special functions", not only rat/trig ?
>
> Jean-Claude
>
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