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Re: Integration question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg21006] Re: [mg20966] Integration question
  • From: "David Park" <djmp at earthlink.net>
  • Date: Thu, 2 Dec 1999 21:41:19 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

In Version 4 the second evaluation does give 1 without any conditions.

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/


>Please try the following simple tests:
>
>
>     Integrate[Exp[x-a],x]
>
>then,
>
>    Integrate[Exp[x-a],{x,-Infinity,a}]
>
>I get the following solution (with Mathematica 3.01)
>
> If[a<0,1,...]
>
>Is this the intended solution for this integral? A simple calculation
>shows that this integral will evaluate to 1 for any a > 0 !
>
>--Virgil




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