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

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

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