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MathGroup Archive 2005

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A bug in Integrate ?

  • To: mathgroup at
  • Subject: [mg56321] A bug in Integrate ?
  • From: "Stepan Yakovenko" <yakovenko-mg at>
  • Date: Fri, 22 Apr 2005 06:22:46 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Hello !

Strange, but

Integrate[Exp[-x]UnitStep[-x], {x, a, Infinity}]

calculates integral right, but

-Integrate[Exp[-x]UnitStep[-x], {x, Infinity, a}]

says that it doesn't converge.

Can anyone comment this ?


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