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Post date:  6/28/2012 
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Parabola

Definition: A plane curve generated by a point moving so that its distance from a fixed point is equal to its distance from a fixed line : the intersection of a right circular cone with a plane parallel to an element of the cone. A parabola can be defined generally by an equation of the form y = ax^2 + bx + c where a is nonzero.
Source: merriamwebster.com

Example: y = 5x^2 + 2x  1.
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