单位取样序列:代码: n=-5:10; y=zeros(1,5),1,zeros(1,10); stem(n,y) axis(-5,10,0,2); title(单位取样序列)序列图:单位阶跃序列:代码: n=-5:10; y=zeros(1,5),ones(1,11); stem(n,y,r) axis(-5,10,0,2);序列图:矩形序列;代码: n=-5:10; y=zeros(1,5),ones(1,5),zeros(1,6); plot(n,y) stem(n,y) axis(-5,10,0,2); title(矩形序列);序列图:正弦序列代码: n=-5:0.5:10; y=sin(0.5*pi*n); stem(n,y,g) axis(-5,10,-2,2); title(正弦序列);序列图:实指数序列:代码: n=-10:0.5:10; y=power(0.5,n); stem(n,y,g) title(实指数序列);序列图