Re: DiracDelta Function question
- To: mathgroup at smc.vnet.net
- Subject: [mg21242] Re: DiracDelta Function question
- From: "John M. Jowett" <John.Jowett at cern.ch>
- Date: Mon, 20 Dec 1999 02:28:03 -0500 (EST)
- Organization: CERN
- References: <831vk0$g89@smc.vnet.net> <83aare$qq0@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Bojan Bistrovic wrote:
>
> Julian Francis wrote:
> > Why is mathematica unable to evaluate:
> > Integrate[DiracDelta[2 x - 1], {x, -Infinity, +Infinity}]
> >
> > Also interestingly:
> > Integrate[DiracDelta[2 x - 2], {x, -Infinity, +Infinity}]
> >
> > returns (1/2)
> >
> > I should have thought that the answer in both cases would be 1.
>>>>>>>>> SNIP <<<<<<<<<<<<<
> It's probably a bug in MS-Windows :-). My Linux version returns 1/2 in
On my Windows (NT) system, Mathematica 4.0 returns 1/2, quite correctly,
for both cases. (The first one may have taken a few seconds longer
while Mathematica loaded something behind the scenes.)
John Jowett