Focus Command
From GeoGebra Manual
- 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.