Answered
Hi. I tried to plot the surface of a parametrized torus, but plotter haven't drawn this object. Could you help me out, please? Btw, the equations i tried were: ((R+r*cos(v))cos(u),(R+r*cos(v))sin(u),r*sin(v)). Also I attempted to graph the torus via implicit form, and still nothing had happened.
The same question 
you can do two points A,B then Surface(Circle(A, B), 360°, xAxis)
or searching in https://www.geogebra.org/se...
Hi
try with this command
Surface((R + r cos(s)) cos(t), (R + r cos(s)) sin(t), r sin(s), t, 0, 2π, s, 0, 2π)
such as this file
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