Talk:Surface of revolution

Spherical curve
The integral for the case of the spherical curve with radius r is zero. --78.51.235.70 (talk) 19:22, 8 February 2009 (UTC).
 * No, the integral is correct, r can be pulled out and the remaining integral gives 2r.--78.52.220.125 (talk) 16:29, 21 February 2009 (UTC)

For the case of the spherical curve the integral is not correct. x can be pulled out instead of r.

Rotation of an "implicit function"
What is the (implicit) 3D formula of a rotated 2D implicit function F(x,y)=0 --RokerHRO (talk) 23:41, 15 March 2016 (UTC)