Plotting a Unit Periodic Impulse Signal

I need to graph this signal and do not know the best way to go about graphing the signal of an impulse including a period.

[Ameer Hamza]

What is the period of the output signal?

[Evan Hicks]

The period is 3 as shown through the subscript.

Answer 1

[Ameer Hamza]

Try this

syms x k

n = 10;
f = symsum(6*kroneckerDelta(x, 3*k), k, 0, n);
xv = 0:3*n;
yv = subs(f, xv);
stem(xv, yv);