Re: Integration question
- To: mathgroup at smc.vnet.net
- Subject: [mg21015] Re: [mg20966] Integration question
- From: "Tomas Garza" <tgarza at mail.internet.com.mx>
- Date: Thu, 2 Dec 1999 21:41:27 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
V Stokes [birdy00 at bu.edu] wrote:
> 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 !
The following was made on Version 4:
In[1]:=
Clear[a, x]
In[2]:=
Integrate[Exp[x - a], x]
Out[2]=
\!\(\[ExponentialE]\^\(\(-a\) + x\)\)
In[3]:=
Integrate[Exp[x - a], {x, -Infinity, a}]
Out[3]=
1
Tomas Garza
Mexico City