Focus Command
From GeoGebra Manual
Revision as of 13:08, 23 July 2015 by Markus.winkler (talk | contribs)
- Focus[ <Conic> ]
- Yields (all) foci of the conic section.
- Example:
Focus[4x^2 - y^2 + 16x + 20 = 0]
returns the two foci of the given hyperbola: A=(-2, -2.24) and B=(-2, 2.24).
Note: See also the Directrix command.