Question

急！matlab画一个函数等高线

z=200-x^2/5000-y^2/800
z＝100，200

急谢谢！！

Answer 1

>> x=-710:10:710;
y=-300:5:300;
[xx,yy]=meshgrid(x,y);
zz=200-xx.^2/5000-yy.^2/800;
c=contour(xx,yy,zz,8);
clabel(c)

Answer 2

>>x=-710:10:710;
y=-300:5:300;
[xx,yy]=meshgrid(x,y);
zz=200-xx.^2/5000-yy.^2/800;
waterfall(xx,yy,zz);
c=contour3(xx,yy,zz,8,'k');
clabel(c);
xlabel('x轴'),ylabel('y轴'),zlabel('z轴');

Answer 3

>> x=-710:10:710;
y=-300:5:300;
[xx,yy]=meshgrid(x,y);
zz=200-xx.^2/5000-yy.^2/800;
c=contour(xx,yy,zz,8);
clabel(c) .
ok了