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Re: Re: A bug in Integrate ?


On Sat, 23 Apr 2005 01:16:34 -0400 (EDT)
  "Scout" <user at domain.com> wrote:
> There is no bug at all!
> 
> Integrate[Exp[-x]UnitStep[-x], {x, a, Infinity}]
> and
> -Integrate[Exp[-x]UnitStep[-x], {x, Infinity, a}]
> 
> return the same result:    (-1+E^-a) UnitStep[-a]
> ..

I've just tried that on Mathematica 4 and in gave the same 
result. But Mathematica 5 says that the second integral 
doesn't converge. There, that's that. By the way, what's 
your version of Mathematica ?


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