Parabolas: Focus, Directrix and Latus Rectum

Описание к видео Parabolas: Focus, Directrix and Latus Rectum

Learn the next level of parabola work: defining them in terms of a set of points equidistant from a focus and a directrix and learning to derive the formula given a focus, a directrix, a vertex or a picture, as well as how to find the focus, directrix, and vertex from a formula, and how to use the latus rectum to aid in graphing.

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