Date: Jul 12, 2011 12:35 AM
Author: mbalover9@gmail.com
Subject: Re: dirac delta function is not a TRUE function??
On Jul 11, 7:36 pm, Gerry Myerson <ge...@maths.mq.edi.ai.i2u4email>

wrote:

> In article

> <4c1e3a16-63c5-470a-b617-8528f4005...@u6g2000prc.googlegroups.com>,

>

> MBALOVER <mbalov...@gmail.com> wrote:

> > Hi all,

>

> > From WIKI, I learn that dirac delta function is not a true function.

> > However, I do not understand the explanation in WIKI and still get

> > confused, why it is not a TRUE function.

>

> > Could you please help me to understand it?

>

> > Thank you.

>

> A function from a set A to a set B is an assignment of

> an element of B to each element of A.

>

> If A and B are not specified, it is often assumed that both

> are taken to be the set R of real numbers.

>

> The Dirac delta function does not assign a real number to zero,

> and is thus not a true function.

>

> --

> Gerry Myerson (ge...@maths.mq.edi.ai) (i -> u for email)

Thanks Gerry. But I am still confused. I think at x = 0, delta(x) =

infinity. If so, y = -log(0) = + infinity too. Is y = - log(x) Not a

true function?

Thanks