
Re: dirac delta function is not a TRUE function??
Posted:
Jul 12, 2011 3:46 AM


MBALOVER 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.
There is no function delta, in the usual sense of the word function, such that
delta(x) = 0 if x =/= 0
and
int_infty^+infty delta(x) dx = 1
> Could you please help me to understand it?
It may be understood as a distribution, see http://en.wikipedia.org/wiki/Distribution_(mathematics).
 When a true genius appears in the world, you may know him by this sign, that the dunces are all in confederacy against him. Jonathan Swift: Thoughts on Various Subjects, Moral and Diverting

