MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Inconsistent behavior?


Mathematica avoids expanding Binomial (and other functions) in cases where 
the resulting expression might be too long to be of interest. You can 
override this by using FunctionExpand.

Binomial[n, 6] // FunctionExpand

1/720 (-5+n) (-4+n) (-3+n) (-2+n) (-1+n) n

Stephen Luttrell
West Malvern, UK

"angela" <mpopyft at lycos.com> wrote in message 
news:ft7ggo$bs3$1 at smc.vnet.net...
> Binomial[n,4] yields
> 1/24 (-3+n) (-2+n) (-1+n) n
>
> Binomial[n,5] yields
> 1/120 (-4+n) (-3+n) (-2+n) (-1+n) n
>
> Binomial[n,6] yields
> Binomial[n,6]
>
> Binomial[n,7] yields
> Binomial[n,7]
>
> Is some setting doing this.
>
> Thanks;
> Angela
> 



  • Prev by Date: Re: Simple Q: How to give computed results from NSolve to
  • Next by Date: Re: Inconsistent behavior?
  • Previous by thread: Re: Inconsistent behavior?
  • Next by thread: Re: Inconsistent behavior?