Question

如何用matlab绘制双叶双曲面x^2/25+y^2/36 -z^2/16=-1

Answer 1

[x,y]=meshgrid(-10:0.2:10);

a=5;b=6;c=4;% 假设a=1;b=2;c=3

z1=sqrt(c.^2*(x.^2/(a.^2)+y.^2/(b.^2)+1));

z2=-sqrt(c.^2*(x.^2/(a.^2)+y.^2/(b.^2)+1));

mesh(x,y,z1)

hold on

mesh(x,y,z2)