On Wed, 2011-07-20 at 21:12 +1000, Daniel Dalton wrote:
> I was just wondering if anyone knew how to use the Npr and Ncr functions
> in maxima? (Presuming maxima has this functionality)...
I haven't seen them in Maxima, but you can define them easily:
(%i3) nPr(n,r):=n!/(n-r)!$
(%i4) nCr(n,r):=nPr(n,r)/r!$
(%i5) nPr(4,2);
(%o5) 12
(%i6) nCr(4,2);
(%o6) 6
Regards,
Jaime