ex4_11.m

源代码集合

t=0:0.05:2;  u=0.5*exp(-2*t).*sin(0.5*t); 
y=1+exp(-2*t).*sin(3*t)-exp(-2*t).*cos(3*t);
errorbar(t,y,-u,u), axis([0,2,0,1.5])