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Consider the following AP(3) model: x(n)=0.98x(n3)+w(n), where w(n) WGN(0,1). (a) Plot the PSD of x(n) and check if the obtained process is going to exhibit a pseudoperiodic behavior. (b) Generate and plot 100 samples of the process. Does the graph support the conclusion of part (a)? If yes, what is the period? (c) Compute and plot the PSD of the process y(n)=31[x(n1)+x(n)+x(n+1)]. (d) Repeat part (b) and explain the difference between the behavior of processes x(n) and y(n)