      # How To Graph This(x^2+y^2+z^2=4)

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### #1 arash_class

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Posted 04 June 2007 - 03:51 PM

how to graph this(x^2+y^2+z^2=4) in classpad

### #2 The_AFX_Master

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Posted 04 June 2007 - 09:32 PM

Parse Z as a function of X,Y as:

z=+- sqrt(4-x^2-y^2) will give you the upper or the lower part of the graph (+ or -) that's a disadvantage

also you can graph the whole thing with parametric expressions (OS3), but i didnt give it a try, someone else?. or you can see the OS 3.00 users guide, somewhere on the forum,.

### #3 Gaumerie

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Posted 05 June 2007 - 06:53 AM

x(s,t) = 4 Cos(s) Sin(t)
y(s,t) = 4 Sin(s) Sin(t)
z(s,t) = 4 Cos(t)

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