Difference between revisions of "Focus Command"
From GeoGebra Manual
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; Focus[ <Conic> ]: Yields (all) foci of the conic section. | ; Focus[ <Conic> ]: Yields (all) foci of the conic section. | ||
:{{Example|1=<code>Focus[4x^2 - y^2 + 16x + 20 = 0]</code> returns the two foci of the given hyperbola: ''A''=(-2, -2.24) and ''B''=(-2, 2.24).}} | :{{Example|1=<code>Focus[4x^2 - y^2 + 16x + 20 = 0]</code> returns the two foci of the given hyperbola: ''A''=(-2, -2.24) and ''B''=(-2, 2.24).}} | ||
| + | {{Note|1=See also the [[Directrix Command|Directrix]] command.}} | ||
Revision as of 16:07, 15 January 2014
- 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.
