RE: [Axiom-math] special functions

[yigal]

Yes, I didn't realize the power of Axiom, I simply made the function,

gamma(n,x) == factorial(n-1)*exp(-x)*reduce(+,[x^i/factorial(i) for i in
0..(n-1)])

which was adapted from the example function in the book,

f(n) == reduce(*,[i for i in 2..n])

sorry for the lame question I am just beginning to use Axiom and best,

Yigal

On Thu, 2006-01-26 at 23:09 +0100, Vanuxem Grégory wrote:
> Hi,

> > -----Message d'origine-----
> > De : address@hidden
> > [mailto:address@hidden la part de
> > yigal
> > Envoyé : jeudi 26 janvier 2006 21:32
> > À : address@hidden
> > Objet : [Axiom-math] special functions
> >
> >
> > Is there a way in Axiom >= 3.9 to get a numerical approximation for
> > Gamma(x,y)- without the use of NAG?  I know there is for Gamma(x) but
> > for incomplete gamma there seems no straightforward way.
> 
> No :-(
> 
> Cheers,
> 
> Greg
> 
> > ----------------------------------------------------------------------
> > For instance,
> >
> > (3) -> Gamma(1,2)
> >    Loading /usr/lib/axiom-20050901/algebra/IDPOAMS.o for domain
> >       IndexedDirectProductOrderedAbelianMonoidSup
> >    Loading /usr/lib/axiom-20050901/algebra/IDPOAM.o for domain
> >       IndexedDirectProductOrderedAbelianMonoid
> >
> >          _
> >    (3)  | (1,2)
> >                                                      Type: Expression
> > Integer
> > -----------------------------------------------------------------------
> >
> > Yigal Weinstein
> >
> >
> >
> >
> > _______________________________________________
> > Axiom-math mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/axiom-math
> >
> 
>