如何用MATLAB编程 画出z=2x.^2-2xy+y.^2-3x+y的图形，谢谢高手们

Question

如题所述

Answer 1

x=-10:0.1:10;y=x;

>> [X,Y]=meshgrid(x,y);

>> Z=2*X.^2-2*X.*Y+Y.^2-3*X+Y;

>> mesh(X,Y,Z)

Answer 2

[x,y]=meshgrid(-5:0.01:5);
z=2*x.^2-2*x*y+y.^2-3*x+y;
mesh(x,y,z)

Answer 3

ezmesh('2*X.^2-2*X.*Y+Y.^2-3*X+Y')