How to plot signal with unit step?

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Bilal Siddiqui - 2023-11-03T09:53:58+00:00
Question: How to plot signal with unit step?

I want to plot the following signal in matlab but I am not sure how to do this with the unit step response involved.     x[n] = ((4/5)^n)u[n] -5 < n < 20  

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    • Expert Answer

    Profile picture of John Williams John Williams answered . 2025-11-20

    You can use heaviside function:

     n = -5:1:20;
 x = ((4/5).^n).*heaviside(n);
 stem(n,x)

    Bet be aware heaviside(0)=0.5


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