The funnel surface is a Regular Surface defined by the Cartesian equation

(1) |

(2) | |||

(3) | |||

(4) |

**References**

Gray, A. *Modern Differential Geometry of Curves and Surfaces.*
Boca Raton, FL: CRC Press, pp. 325-327, 1993.

© 1996-9

1999-05-26