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Re: Trouble with FullSimplify

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98632] Re: Trouble with FullSimplify
  • From: lehin.p at gmail.com
  • Date: Wed, 15 Apr 2009 04:57:12 -0400 (EDT)
  • References: <gphdse$omb$1@smc.vnet.net>

On 15 =DC=D0=E0, 03:16, JUN <noec... at gmail.com> wrote:
> What is wrong with the following in Mathematica 7:
>
> Clear[n];
> FullSimplify[n Exp[-n * 0.], Element[n, Integers]]
>
> result: n/2, which is scary. If I replace 0. by $MachineEpsilon/2, I
> get a correct result.
>
> It's also fun to express your feelings about Mathematica 7 this way:
> FullSimplify[$Version Exp[$Version *($VersionNumber -
> $VersionNumber)]]
>
> Jens

This is a terrible bug. I am very much disappointed with Simplify and
even more with FullSimplify functions in Mathematica 6 and worse in
Mathematica 7.


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