第一题
h=figure('MenuBar','figure','color','r','WindowButtonDownFcn','disp(''Left Button Pressed'')')
%第二题
x=-2:0.01:2;
y=x.^2.*exp(2*x);
h=line(x,y);
set(h,'color','r','linestyle',':','linewidth',2)
text(1,exp(2),'y=x^2*exp(2*x)')
%第三题
t=0:0.00001:0.001;
[t,x]=meshgrid(t);
v=10*exp(-0.01*x).*sin(2000*pi*t-0.2*x+pi);
axes('view',[-37.5,30]);
h=surface(t,x,v);
title('v=10*exp(-0.01*x).*sin(2000*pi*t-0.2*x+pi)');
xlabel(Ct'),ylabel('x'),zlabel('v')
%第四题
x=0:0.01:2*pi;
y1=sin(x);
y2=cos(x);
y3=tan(x);
y4=cot(x);
subplot(2,2,1);
plot(x,y1);
subplot(2,2,2);
plot(x,y2);
subplot(2,2,3);
plot(x,y3);
subplot(2,2,4);
plot(x,y4);
第五题
cylinder(5);
light('Position',[0,1,1]);
material shiny
