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Ellipse — from MathWorld

This entry was posted on Wednesday, July 14th, 2004 at 11:33 AM and is filed under Puzzles, Links, Mathematics and Graph Theory.

Ellipse — from MathWorld Notice, if you will, that the truly general form for an ellipse - that is, one that might be rotated and whose foci might not share any coordinate values - is not treated there. Can you find a more general equation for an ellipse that doesn’t involve this assumption that the foci will both have the same y value?

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