Dirac Delta Function

[hasan_researc]

I don't understand in the first paragraph of the attached lecture notes.

Could anyone help?

 

[hasan_researc]

To begin with, why is the Dirac delta function is the continuous equivalent of the discrete-case Kronecker delta function.

 

[micromass]

See http://www.khanacademy.org/video/dirac-delta-function?playlist=Differential Equations I found this extremely helpful...