Hold命令 °t=0:0.54*pi >>y=exp(-0.1*t).*sin(t); °plot(t1y) >>%hold on plot(t, y1,g,) >>t2=0:0.2:2*pi y2=Xp(-0.5*t2)*in(5*t2+1) > hold on? plot(t2 y2, -,)Hold 命令 • t=0:0.5:4*pi; • >> y=exp(-0.1*t).*sin(t); • plot(t,y) • >> %hold on ,plot(t,y1,'g') • >> t2=0:0.2:2*pi; • y2=exp(-0.5*t2).*sin(5*t2+1); • >> hold on？？ • plot(t2,y2,'--r')