Question

plot use mat lab -5<n<5
x1[n] =u[n-2]

Answer 1

Here is the Matlab code to plot . Copy and paste the code below in the MATLAB window and hit enter, MATLAB will give you the plot

n = -5 : 5;
y = heaviside(n-2);
stem(n, y)
axis([-10 10 -1 5])

Explanation of code

n = -5 : 5;:This line represents range of the horizontal axis time instants

y = heaviside(n-2);: This represents the shifted unit step sequence

stem(n, y): It is a command to discrete plot

axis([-10 10 -1 5]): It shows the range of horizontal and vertical axis

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