some questions on plot3d

• Subject: some questions on plot3d
• From: maxio at sohu
• Date: Thu, 14 Apr 2005 12:00:02 +0800 (CST)

I want to get a 3d-plot of x^2-y^2-z^2=2, but Maxima 5.9.0 cannot do this.
SO , I plot the graph of x=sqrt(2+z^2+y^2):
plot3d(y^2+z^2+2,[y,-10,10],[z,-10,10]);
which give half of what I wanted,but I donnot know how to add x=-sqrt(2+z^2+y^2) to the existing plot. I can not find the method in Manual.

Thank you.

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