GeoGebra 6 van A tot Z Ellips: x²/a² + y²/b² = 1 Hyperbool x²/a²- y²/b² = 1 t e n . o l e h t a Veralgemening: a.x²+b.y²+c.x.y+d.x+h.y+k=0 m . w w w © Ivan De Winne www.mathelo.net 87