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DiracDelta Function question

• To: mathgroup at smc.vnet.net
• Subject: [mg21082] DiracDelta Function question
• From: "Julian Francis" <acz43 at dial.pipex.com>
• Date: Sun, 12 Dec 1999 23:51:50 -0500 (EST)
• Organization: UUNET WorldCom server (post doesn't reflect views of UUNET WorldCom
• Sender: owner-wri-mathgroup at wolfram.com

Folks,

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.

I am using Mathematica v4.0 on MS Windows 95.

Thanks for any light shed on this.

Julian Francis.
acz43 at dial.pipex.com

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