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Distance from a Point on the Parabola to the Directrix
For:
$$y^2=4ax$$
the directrix is:
$$x=-a$$
For a point $$(x,y)$$ on the parabola:
$$PM=x+a$$
Usage
- Used directly with the focus-directrix property.
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Distance from a Point on the Parabola to the Directrix
For:
$$y^2=4ax$$
the directrix is:
$$x=-a$$
For a point $$(x,y)$$ on the parabola:
$$PM=x+a$$
Usage
- Used directly with the focus-directrix property.
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