... 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 ... 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 0.343 0.2401 0.16807 0.1176 0.082 0. 057 6 0.04 0.028];subplot(2,1,2);stem(0:10,h);xlabel('n'),ylabel('h(n)');x=[0 ... subplot(2,1,2);stem(0:10,x);xlabel('n'),ylabel('x(n)');y=conv(x,h);subplot(2,1,2);stem(y);xlabel('n'),ylabel('y(n)');e.x(n)=u(n)-u(n-2)subplot(2,1,2);stem(k2,y);xlabel('n'),ylabel('y(n)');grid; f.x(n)=0 ,5 nu(n)h(n)=0,7nu(n)code:n0=10; n=-n0:n0; u=n>=0; f=(1/2).^n; x=f.*u; f1=(0.7).^n;...