How do I plot a prod function in MATLAB?

My equation I am trying to do is 2*∏((t-5)/4), my graph is suppose to look like this:

I tried using the heaviside() but that didn't seem to work? This is the current code I have but nothing comes up?

This is the goal:

update: This is how far I got but can't seem to figure how to go down?

%This is the h(t)
t = 1:1:10;
ht = 2 * heaviside((t-5)/4);

plot(t, ht, 'b')
axis([0 10 0 4])

Answer 1

[Matt J]

fun=@(t) abs(t-5)<=1/2;

fplot(fun,[1,10]); axis padded

[Monqiue Parrish]

Ok that seem to work

Answer 2

[Walter Roberson]

syms t N
ht = 2 * symprod((t-5)/4, t, 1, N)

ht = 

T = 1:10;
y = double(subs(ht, N, T))

y = 1×10

-2.0000 1.5000 -0.7500 0.1875 0 0 0 0 0 0

plot(T, y)

[Monqiue Parrish]

Sorry I updated the question with the desire graph. But I've tried the symprod