ex_4.m

信号与系统分析以matlab实现

%ex5   p158
clear all;
%(1)
a1=[1 3 2];
b1=1;
figure(1)
subplot(2,1,1),impulse(b1,a1),grid on
subplot(2,1,2),step(b1,a1),grid on
%(2)
a2=[1 2 2];
b2=[1 0];
figure(2)
subplot(2,1,1),impulse(b2,a2),grid on
subplot(2,1,2),step(b2,a2),grid on
%(3)
a3=[1 1 1];
b3=[1 1];
figure(3)
subplot(2,1,1),impulse(b3,a3),grid on
subplot(2,1,2),step(b3,a3),grid on
%(4)
a4=[1 0 8];
b4=[1];
figure(4)
subplot(2,1,1),impulse(b4,a4),grid on
subplot(2,1,2),step(b4,a4),grid on