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

*To*: mathgroup at smc.vnet.net*Subject*: [mg46918] Re: Mathematica 5: Integration bug in quadratic found by the GEMM machine*From*: lalu_bhatt at yahoo.com (Bhuvanesh)*Date*: Tue, 16 Mar 2004 02:37:21 -0500 (EST)*References*: <c33da8$fsi$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Vladimir Bondarenko <vvb at mail.strace.net> wrote: > $Version > > 5.0 for Microsoft Windows (June 11, 2003) > > Integrate[1/(-2 z^2 + 3 z - 1), {z, -1, 0}] > > Log[3/2] // invalid answer > > 0.405465 > > NIntegrate[1/(-2*z^2 + 3*z - 1), {z, -1, 0}] > > -0.405465 This is fixed in version 5.0.1. In[1]:= {$Version, $ReleaseNumber} Out[1]= {5.0 for Linux (November 18, 2003), 1} In[2]:= Integrate[1/(-2 z^2 + 3 z - 1), {z, -1, 0}] 3 Out[2]= -Log[-] 2 In[3]:= N[%] Out[3]= -0.405465 -- Bhuvanesh, Wolfram Research. Disclaimer: Any opinions expressed herein are my own and not necessarily those of Wolfram Research.