plot numerical question



El mi?, 11-03-2009 a las 15:36 -0400, Kostas Oikonomou escribi?:
> I have a function
> 
> r4(s) := s!/(((s/4)!)^4 * 4^s)
> 
> and I am trying to plot it over the range [200,300]:
> 
> plot2d(r4(s), [s,200,300])
> 
> plot2d returns silently, i.e. it produces nothing.   I am 
> fairly sure the problem is that the computation involves 
> intermediate numbers that are too large, although the final 
> result is well within the rang of an ordinary float.  E.g. 
> r4(300) is of the order of 10^-4.


Hello,

Due to overflows, no data file is generated for gnuplot.


(%i21) float(r4(223));
Maxima encountered a Lisp error:

 
floating point overflow



-- 
Mario