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The graph of a quadratic function y=  ax^{2} + bx + c is called a parabola. Parabola either opens upward or downward. It has a turning point called vertex which is either the highest point or the lowest point of the graph....

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A symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side. The path of a projectile under the influence of gravity ideally follows a curve of this shape.