Re: bug in Mathematica?
- To: mathgroup at smc.vnet.net
- Subject: [mg122671] Re: bug in Mathematica?
- From: David Reiss <dbreiss at gmail.com>
- Date: Sat, 5 Nov 2011 04:47:38 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <j90hep$sp5$1@smc.vnet.net>
Appears to be a bug.
On Nov 4, 7:14 am, "Hansruedi Widmer" <wid... at baden.ch> wrote:
> Hi Everyone
>
> The code
>
> Sum[Binomial[m, j], {j, 1, m - 1}]
>
> produces the correct value -2+2^m.
>
> But the code
>
> Product[Binomial[m, j], {j, 1, m - 1}]
>
> creates the wrong value of zero. Does anyone have an explanation for why
> this is happening?
>
> Thanks and best regards
>
> Hansrued Widmer