t = -2:pi:pi/180:2*pi; y=3.*sin(t).*exp(-t); plot(t,y) xlabel('t') ylabel('y') y0 = zeros(1,length(t)); hold on plot(t,y0,'g:') hold on [y_max,t_lable]=max(y); plot(t(t_lable),y_max,'r.','MarkerSize',20); text(t(t_lable)*1.3,y_max*2,['y=' num2str(y_max)]);
