plotting a periodic signal

n=1
x[n]= {1 2 2 1 4}
y[n]=x1[n]+y1[n-1]
stem (n,y)

Hi All, been trying solve this question any help would be greatly appreiciated.

x1[n] = {1,2,2,1,4}, y1[n]=x1[n]+y1[n-1]

Answer 1

[mousa alsaeed]

https://www.mathworks.com/matlabcentral/answers/465905-how-can-i-plot-the-periodic-function-please-help#answer_403303

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