# Query about dirac delta function

6 views (last 30 days)
Shaukhin on 10 Feb 2023
Edited: John D'Errico on 10 Feb 2023
What do you mean in matlab by dirac(2,w)?

John D'Errico on 10 Feb 2023
Edited: John D'Errico on 10 Feb 2023
It seems pretty clear.
help dirac
--- help for sym/dirac --- DIRAC Symbolic delta function. DIRAC(X) is zero for all X, except X == 0 where it is infinite. DIRAC(X) is not a function in the strict sense, but rather a distribution with int(dirac(x-a)*f(x),-inf,inf) = f(a) and diff(heaviside(x),x) = dirac(x). DIRAC(N,X) represents the N-th derivative of DIRAC(X). See also SYM/HEAVISIDE. Documentation for sym/dirac doc sym/dirac Other uses of dirac double/dirac single/dirac
So dirac(2,w) is the second derivative of that function, at w. yes, I know how can you differentiate a function like a Dirac delta? If you want to understand what the derivatives of the Dirac Delta function are, you will want to do some reading, where someone has already spent a fair amount of time to explain it.

### Categories

Find more on Argument Definitions in Help Center and File Exchange

R2022b

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!