Latus rectum: Verskil tussen weergawes

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Uitleg van bronteks
Uitleg van bronteks
Lyn 22:
:<math>r=\frac{\ell}{1+\varepsilon \cos(\phi)}</math>
 
== Verwysings ==
{{Verwysings}}
 
== Eksterne skakels ==
 
* {{MathWorld | urlname=ConicSectionDirectrix | title=Conic Section Directrix}}