Re: Yet another Version 4.2 Integration howler
- To: mathgroup at smc.vnet.net
- Subject: [mg35364] Re: Yet another Version 4.2 Integration howler
- From: Daniel Lichtblau <danl at wolfram.com>
- Date: Tue, 9 Jul 2002 06:50:34 -0400 (EDT)
- References: <200207050620.CAA07180@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Vladimir Bondarenko wrote:
>
> ..............................................................................
>
> BUG # 3617
>
> For an expression having a concrete numeric value, Indeterminate is reported
>
> BUG HISTORY: PRESENT 4.2 for Microsoft Windows (February 28, 2002)
> ABSENT 4.1 for Microsoft Windows (November 2, 2000)
> ABSENT 4.0 for Microsoft Windows (April 21, 1999)
> ABSENT Microsoft Windows 3.0 (April 25, 1997)
> ABSENT Windows 387 2.2 (April 9, 1993)
>
> Reproducible Always
> BuildNumber 156656
> CPU ID AuthenticAMD AMD Athlon(tm) XP 1600+
> RAM size 512 Mb
> Free HDD size 11 Gb
> OS ID Microsoft Windows 98 4.10.2222 A
>
> The value of the integral is defined.
> However, Mathematica reports Indeterminate which is invalid.
>
> Integrate[Log[z]/(1 + z^2), {z, 0, Infinity}]
>
> ACTUAL: Indeterminate
>
> EXPECTED: 0
>
> CHECK-UP: NIntegrate[Log[z]/(1 + z^2), {z, 0, Infinity}] // Chop
>
> 0
>
> ..............................................................................
>
> Best,
>
> Vladimir Bondarenko
In[1]:= Integrate[Log[z]/(1 + z^2), {z, 0, Infinity}]
Out[1]= 0
In[2]:= $Version
Out[2]= 4.2 for Linux (July 8, 2002)
What is the point of sending the news group notices of "bugs" from a
beta version of the software?
Daniel Lichtblau
Wolfram Research
- References:
- Yet another Version 4.2 Integration howler
- From: Vladimir Bondarenko <vvb@mail.strace.net>
- Yet another Version 4.2 Integration howler