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Plot step response of discrete signal

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Luke Brown
Luke Brown 2021-9-22
编辑： Shayan Sepahvand 2021-9-22
Is there a way to plot the step response of y[n] = y[n-2]+x[n-1]?

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Shayan Sepahvand
Shayan Sepahvand 2021-9-22
编辑：Shayan Sepahvand 2021-9-22
Dear Luke,
If you take the z-transform of both sides, you will get:
then define a vector using ones(.) and set it as X. For example,
X = ones(100,1);
then use this code
Y = filter([0, 1], [1, 0, -1], X);
Finally it seems a good idea to plot Y with;
stem(Y)

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