Question

Can you Help me???

Answer 1

thats Dirac delta function

Answer 2

@Algebraic!

Answer 3

what type of help

Answer 4

proves that function using Gauss theorem...,

Answer 5

you mean gauss divergence theorem

Answer 6

look the easiest way to prove the dirac delta function is to take anology with the vector dot produt. I am unable to recollect the gauss theorem but it is related to vector. when the two subscript of delta functions are equal then delta function is 1 else zero as in vector dot product between i, j, and k unit vector. if dot product is between i and i it is one else zero..
I am not sure is this will be of any help to you.

Answer 7

Yes, but I need a math expression, not a theory.