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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




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