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Focus

  • Definition: A point related to the construction and properties of conic sections. Hyperbolas and noncircular ellipses have two distinct foci and two associated conic section directrices, each directrix being perpendicular to the line joining the two foci (Eves 1965, p. 275).

    Source: http://mathworld.wolfram.com

  • Listed under: Precalculus, Multivariable Calculus

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