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MathGroup Archive 1996

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Wrong integration

  • To: mathgroup at smc.vnet.net
  • Subject: [mg4272] Wrong integration
  • From: Egbert Kankeleit <kankel at HRZPUB.th-darmstadt.de>
  • Date: Sat, 29 Jun 1996 03:52:11 -0400
  • Organization: TH Darmstadt
  • Sender: owner-wri-mathgroup at wolfram.com

The definite integration of the two identical exptressions:

Integrate[#,{e,-Infinity,Infinity}]&/@
			 	{-1/(1+e^2)/(-1-(e-v)^2),
         			 +1/(1+e^2)/(+1+(e-v)^2)}
produces:
{0,     2 Pi/( 4 + v^2)}
What happened to get the first wrong result. 
-- 
E. Kankeleit   
Institut fuer Kernphysik . 	Technische Hochschule Darmstadt
Schlossgartenstr. 9     	D-64289 Darmstadt
Tel: 06151-162480		Fax: 06151 164321

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