dm12202.m

the code of the book come form the book of marlix laboratory with the book of singal

%dm12202
%绘制单边指数衰减正弦振荡信号的拉普拉斯变换幅度曲面图
x=-1:0.08:0.2;
y=-2:0.08:2;
[x,y]=meshgrid(x,y);
s=x+i*y;
F=abs(1./(s.*s+2*s+2));
mesh(x,y,F);
surf(x,y,F)
colormap(hsv);
title('指数衰减正弦振荡信号拉普拉斯变换幅度曲面图');
xlabel('实轴')
ylabel('虚轴')