Question: The following MATLAB code plots a discrete-time step function of amplitude 3 starting at discrete-time 4 n=-10:10; u=4* stepfun(n, 3); stem (n, u, 'black'' filled');

The following MATLAB code plots a discrete-time step function of amplitude 3 starting at discrete-time 4 n=-10:10; u=4* stepfun(n, 3); stem (n, u, 'black'' filled'); axis ([-10 10 04]) True False
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