Re: Integrals involving the Heaviside function
- To: mathgroup at yoda.physics.unc.edu
- Subject: Re: Integrals involving the Heaviside function
- From: bleier at menu.visus.com (Alan Bleier)
- Date: Mon, 5 Oct 92 12:30:18 EDT
You wrote:
I need to perform (many) integrals whose simplest example is
Integrate[Heaviside[x-2] Exp[-x], {x,0,Infinity}]
where Heaviside is the step function (not available in Mma).
Heaviside comes as UnitStep in a new package called DiracDelta in the
2.1 upgrade:
<< Calculus`DiracDelta`
Integrate[UnitStep[x - 2] Exp[-x], {x,0,Infinity}]
General::intinit: Loading integration packages.
-2
E
Alan
--
Alan Bleier Member of the Technical Staff
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Pittsburgh, PA 15203 USA bleier at cognos-centi.com