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Re: Incorrect integral in Mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg91377] Re: Incorrect integral in Mathematica
  • From: "Kevin J. McCann" <Kevin.McCann at umbc.edu>
  • Date: Tue, 19 Aug 2008 07:14:28 -0400 (EDT)
  • Organization: University System of Maryland
  • References: <g8b8t8$8pq$1@smc.vnet.net>

With version 6.0.3 I get
2Pi w z


Eran Mukamel wrote:
> Hi All,
> 
> I'm getting a nonsensical answer of 0 for the following integral in Mathematica 5.0 (Mac OSX):
> 
> Integrate[Exp[-x^2/(2w^2)]Exp[-(y - y0)^2/(2z^2)],
>   {x, -Infinity, Infinity}, {y, -Infinity, Infinity}]
> 
> The result should be (2 Pi w z).  Any ideas why this fails?
> 
> Thanks in advance, Eran
> 


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