Re: Mathematica 5: Integration bug in quadratic found by the GEMM machine
- To: mathgroup at smc.vnet.net
- Subject: [mg46923] Re: Mathematica 5: Integration bug in quadratic found by the GEMM machine
- From: drbob at bigfoot.com (Bobby R. Treat)
- Date: Tue, 16 Mar 2004 02:37:28 -0500 (EST)
- References: <c33da8$fsi$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Version 5.0.1 gets it right.
Bobby
Vladimir Bondarenko <vvb at mail.strace.net> wrote in message news:<c33da8$fsi$1 at smc.vnet.net>...
> Hello,
>
> Here is, just of pure curiosity, a sample from my GEMM machine:
>
>
> $Version
>
> 5.0 for Microsoft Windows (June 11, 2003)
>
> Integrate[1/(-2 z^2 + 3 z - 1), {z, -1, 0}]
>
> Log[3/2] // invalid answer
>
> 0.405465
>
> NIntegrate[1/(-2*z^2 + 3*z - 1), {z, -1, 0}]
>
> -0.405465
>
>
> But the above is just a good opportunity: actually, ' am writing
> here to announce the next good piece of news: a massive flow of
> never published bug reports on a certain system is coming within
> several next days after which we will operate at a new level
> of speed; he who watches the activity knows well what I mean.
>
>
> Best wishes,
>
> Vladimir Bondarenko
>
> http://www.cybertester.com/
> http://www.CAS-testing.org/