[Date Index] [Thread Index] [Author Index]

Incorrect integral in Mathematica

• To: mathgroup at smc.vnet.net
• Subject: [mg91362] Incorrect integral in Mathematica
• From: Eran Mukamel <emukamel at stanford.edu>
• Date: Mon, 18 Aug 2008 03:37:03 -0400 (EDT)

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