Plotting the summation of a Heaviside step function
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So I have written a script where I want to plot the summation of a Heaviside function, which equals this i.e :
where 
are real positive parameters with 
and u as real variable.
are real positive parameters with and u as real variable.In the script i wrote i took as 
and u as x as follows :
as and u as x as follows :n=7
m=0:0.5:24;
ms=size(m);
x=-20:2.5:100;
xs=size(x);
S=0;
for i=1:25
s(i)=heaviside(x(i)-m(i));
S=S+s(i);
end
S
plot(x,S)
However, it plots a straight line of dots with jumps in between which kept me wondering if this is right or wrong.
In my initial idea, I wanted to represent this problem with a symbolic math toolbox but I got lost doing that too, I would appreciate it if anyone could give me a hint on how to write one ?.
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2020-4-29
2020-4-29
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