RE: Yet another Version 4.2 Integration howler
- To: mathgroup at smc.vnet.net
- Subject: [mg35288] RE: [mg35267] Yet another Version 4.2 Integration howler
- From: "DrBob" <majort at cox-internet.com>
- Date: Sat, 6 Jul 2002 05:44:57 -0400 (EDT)
- Reply-to: <drbob at bigfoot.com>
- Sender: owner-wri-mathgroup at wolfram.com
It comes out to zero on my machine...
$Version
"4.2 for Microsoft Windows (June 5, 2002)"
Integrate[Log[z]/(1 + z^2), {z, 0, Infinity}]
0
I'm using Windows XP Home on a Gateway 700XL, 1024MB RAM, Pentium 4
2.2GHz.
Surely this isn't a chip issue?!?
Bobby Treat
-----Original Message-----
From: Vladimir Bondarenko [mailto:vvb at mail.strace.net]
To: mathgroup at smc.vnet.net
Subject: [mg35288] [mg35267] Yet another Version 4.2 Integration howler
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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
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Best,
Vladimir Bondarenko