Difference between revisions of "LinearEccentricity Command"
From GeoGebra Manual
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<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|conic}} | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|conic}} | ||
; LinearEccentricity[ <Conic> ]: Calculates the linear eccentricity of the conic section. | ; LinearEccentricity[ <Conic> ]: Calculates the linear eccentricity of the conic section. | ||
− | + | :For ellipses or hyperbolas the command gives the distance between the conic's center and one of its foci, for circles it gives 0, and for parabolas gives the distance between its focus and the vertex. | |
− | For ellipses or hyperbolas | ||
: {{Example|1=<code>LinearEccentricity[4x^2 - y^2 + 16x + 20 = 0]</code> returns 2.24}} | : {{Example|1=<code>LinearEccentricity[4x^2 - y^2 + 16x + 20 = 0]</code> returns 2.24}} | ||
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Revision as of 12:05, 29 December 2015
- LinearEccentricity[ <Conic> ]
- Calculates the linear eccentricity of the conic section.
- For ellipses or hyperbolas the command gives the distance between the conic's center and one of its foci, for circles it gives 0, and for parabolas gives the distance between its focus and the vertex.
- Example:
LinearEccentricity[4x^2 - y^2 + 16x + 20 = 0]
returns 2.24