Sphere

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Sphere

Post  yayousuf on Wed Jun 29, 2011 4:39 pm

How can I draw a sphere.

For example x^2 + y^2 +z^2 =4

If I make it z=x +y - 2. This will not give me a sphere. By the way, the 4 = r.

yayousuf
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Re: Sphere

Post  runiter on Thu Jun 30, 2011 9:43 am

Here is the upper and lower equation for sphere:

z=(4-x^2-y^2)^0.5
z=-(4-x^2-y^2)^0.5

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