When the focus and directrix are used to derive the equation of a parabola, two distances were set equal to each other.

Question

Revolt · Accepted Answer

✔ a point on the parabola; The distance between the directrix and is set equal to the distance between the and the same point on the parabola.: a point on the parabola; The distance between the directrix and is set equal to the distance between the and the same point on the parabola.: focus

Parabolas

When the focus and directrix are used to derive the equation of a parabola, two distances were set equal to each other.

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