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.