Finding the equation of an ellipse from foci and directrices

kasse · Jan 13, 2007

How can one find the eq. of an ellipse given that the foci are (-2,0) and (2,0) and that the directrices are x=-8 and x=8?

cristo · Jan 13, 2007

This seems like a homework question. What have you tried?

berkeman · Jan 13, 2007

Moved to precalc homework.

Kasse, you need to show your own work in order to get our help. What are the equations that define an ellipse?

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