Distance of a Parametric Point from the Directrix
For:
$$P(at^2,2at)$$
and directrix:
$$x=-a$$
$$PM=a(1+t^2)$$
Usage
- Confirms the focus-directrix property and is useful in distance-based problems.
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CAT Formulas
Parabola
Distance of a Parametric Point from the Directrix
Distance of a Parametric Point from the Directrix
For:
$$P(at^2,2at)$$
and directrix:
$$x=-a$$
$$PM=a(1+t^2)$$
Usage
- Confirms the focus-directrix property and is useful in distance-based problems.
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