... subplot(2,1,1),plot(w,abs(h)),grid;xlabel('Frequancy(radian)'),ylabel('Magnitude');d.x(n)=δ(n -3) h(n)=0,7nu(n).code:h=[1 0.7 0.49 0 .34 3 0.2401 0.16807 0.1176 0.082 0.0576 0.04 0.028];subplot(2,1,2);stem(0:10,h);xlabel('n'),ylabel('h(n)');x=[0 ... Matlab.a.code:num=[1 0]; den=[1 -0.7]; h=tf(num,den)Transfer function:- .ss 0 7b. Đáp ứng tần số biên độ.Code:[h w]=freqz([1],[1 -0.7],1024); phi=180*unwrap(angle(h))/pi; subplot(2,1,1),plot(w,abs(h)),grid;xlabel('Frequancy(radian)'),ylabel('Magnitude');d.x(n)=δ(n -3) h(n)=0,7nu(n).code:h=[1...