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Question: I wanna make a sphere not using a command Sphereplot

Question:I wanna make a sphere not using a command Sphereplot

GWANWOO 15
plot
April 09 2015
0

i want to make a solution that makes sphere not using Sphereplot()

i mean it`s fomula for a sphere that x^2+y^2+z^2=r^2

but, as you know

if i do like this

plot3d(x^2+y^2+z^2,x=0..1,y=0..1)

Warning, expecting only range variables [x, y] in expression x^2+y^2+z^2 to be plotted but found name z

 

how to make a sphere !?
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