How many ellipses with a given size (mean $a$ and $b$ given) one can draw through two fixed points in 2D plane?
Number of ellipses through two fixed points in 2D space?
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geometry
euclidean-geometry
analytic-geometry
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0for $a=b$ i.e. a circle the answer is at most $2$, depends on the distance between the points. – 2012-10-10