Question

z²=X²-Y²用MATLAB怎么画

Answer 1

在实数范围画图：

clear all;

clc;

close all;

[x y]=meshgrid(-10:0.1:10,-10:0.1:10);

z=(x.^2-y.^2);

z=sqrt(z.*(z>0));

z1=-z;

mesh(x,y,z)

hold on;

mesh(x,y,z1)

Answer 2

[t,r] = meshgrid([0:0.01*pi:2*pi],[0:0.01:2]);
x = r.*cos(t);
y = r.*sin(t);
Z1 = sqrt(x.^2+y.^2);
Z2 = sqrt(abs(2*x));
z1 = Z1;
z2 = Z2;
z1(Z1>Z2)=nan;
z2(Z1>Z2)=nan;
mesh(x,y,z1)
hold on
mesh(x,y,z2)
axis equal