exp2.m

经典《信号与系统》教程的matlab例程,对深入理解信号与系统相关概念有很大帮助

%=================================================================
% Name：two-sided exponential signal
% This program is used to plot the curves of two-sided exponential
% signals.
%=================================================================
t=-5:0.01:5;
a1=input('输入最大常数a=');
a2=input('输入中等数值的常数a=') ;
a3=input('输入最小常数a=');
x1=exp(-a1*abs(t));
x2=exp(-a2*abs(t));
x3=exp(-a3*abs(t));
subplot(3,1,1);
plot(t,x1);
axis([-5,5,0,1.2]);
grid on;title('The two-sided exponential signal f=exp(-abs(a*t))')
subplot(3,1,2);
plot(t,x2);
axis([-5,5,0,1.2]);
grid on;
subplot(3,1,3);
plot(t,x3);
axis([-5,5,0,1.2]);
grid on;xlabel('time t')
%================================================================