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clf;

num=[0.15 0 -0.15]; den=[1 -0.5 0.7];

L=input('Enter the number of samples L:'); [g t]=impz(num,den,L); stem(t,g);

title(['First',num2str(L),'samples of impulse response']); xlabel('Time Index n'); ylabel('h[n]');

Enter the number of samples L:100

clf;

num=[0.15 0 -0.15]; den=[0.7 -0.5 1];

L=input('Enter the number of samples L:'); [g t]=impz(num,den,L); stem(t,g);

title(['First',num2str(L),'samples of impulse response']); xlabel('Time Index n'); ylabel('h[n]');

Enter the number of samples L:100

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ʽ£¨4.36£©£ºnum = [0.15 0 -1]; den = [0.7 -0.5 1]; zplane(num,den);

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