Mathematica 5: Integration bug in quadratic found by the GEMM machine

*To*: mathgroup at smc.vnet.net*Subject*: [mg46909] Mathematica 5: Integration bug in quadratic found by the GEMM machine*From*: Vladimir Bondarenko <vvb at mail.strace.net>*Date*: Sun, 14 Mar 2004 23:54:24 -0500 (EST)*Reply-to*: Vladimir Bondarenko <vvb at mail.strace.net>*Sender*: owner-wri-mathgroup at wolfram.com

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/

**Follow-Ups**:**Re: Mathematica 5: Integration bug in quadratic found by the GEMM machine***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>