... 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 0.24 01 0 .16 807 0 .11 76 0.082 0.0576 0.04 0.028];subplot(2 ,1, 2);stem(0 :10 ,h);xlabel('n'),ylabel('h(n)');x=[0 0 0 1 0 0 0 0 0 0 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)h(n)=0,7nu(n).code:n0 =10 ; ... 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] ,10 24); phi =18 0*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 ... y=conv(x,h1); length_output=length(x)+length(h1) -1; k2=linspace(-2*n0,2*n0,length_output);subplot(2 ,1, 2);stem(k1,x);xlabel('n'),ylabel('x(n)');grid;subplot(2 ,1, 2);stem(k1,h1);xlabel('n'),ylabel('h(n)');grid;subplot(2 ,1, 2);stem(k2,y);xlabel('n'),ylabel('y(n)');grid;...