Tips and Tricks on Conic Sections


The locus of a point in a plane which moves in the plane in such a way that the ratio of its distance from a fixed points (focus) in the same plane to its distance from a fixed straight line (directrix) is always constant, which is always less than unity.

The vertex divides the join of focus and point of intersection of directrix with axis internally and externally in the ratio e: 1.


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