Answer :

A parabola is the conic section of eccentricity equal to 1.1 resulting from cutting a straight cone with a plane whose angle of inclination with respect to the axis of revolution of the cone is equal to that presented by its generatrix. The plane will therefore result parallel to said line. It is also defined as the locus of the points of a plane equidistant from a line called a guideline, and a point external to it called focus. In projective geometry, the parabola is defined as the envelope curve of lines that join pairs of homologous points in a similar projectivity or similarity.


The parabola appears in many branches of the applied sciences because its form corresponds to the graphs of the quadratic equations. For example, parabolas are the ideal paths of bodies that move under the exclusive influence of gravity.

The equation:

(x-h)^2=4P(y-k)

where, x and y is vertex.
           P is focus distance.

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