Difference between revisions of "ConjugateDiameter Command"
From GeoGebra Manual
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;ConjugateDiameter[ <Line>, <Conic> ]:Returns the diameter of the conic section being its [[w:Conjugate diameters|conjugate diameter]] parallel to the line. | ;ConjugateDiameter[ <Line>, <Conic> ]:Returns the diameter of the conic section being its [[w:Conjugate diameters|conjugate diameter]] parallel to the line. | ||
| + | :{{Example|1=<code>ConjugateDiameter[-4x + 5y = -2, x^2 + 4 y^2 + 2x - 8y + 1 = 0]</code> yields line 5''x'' + 16''y'' = 11}} | ||
; ConjugateDiameter[ <Vector>, <Conic> ]:Returns the conjugate diameter of the diameter that is parallel to the vector (relative to the conic section). | ; ConjugateDiameter[ <Vector>, <Conic> ]:Returns the conjugate diameter of the diameter that is parallel to the vector (relative to the conic section). | ||
| + | :{{Example|1=Let ''u'' = (4,1) be a vector. Then <code>ConjugateDiameter[u, x^2 + 4 y^2 + 2x - 8y + 1 = 0]</code> yields line ''x'' + ''y'' = 0}} | ||
Revision as of 12:28, 15 June 2013
- ConjugateDiameter[ <Line>, <Conic> ]
- Returns the diameter of the conic section being its conjugate diameter parallel to the line.
- Example:
ConjugateDiameter[-4x + 5y = -2, x^2 + 4 y^2 + 2x - 8y + 1 = 0]yields line 5x + 16y = 11
- ConjugateDiameter[ <Vector>, <Conic> ]
- Returns the conjugate diameter of the diameter that is parallel to the vector (relative to the conic section).
- Example: Let u = (4,1) be a vector. Then
ConjugateDiameter[u, x^2 + 4 y^2 + 2x - 8y + 1 = 0]yields line x + y = 0
