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Parabola Opening Towards Positive $$y$$-Axis
$$x^2=4ay$$
Terminology
- Vertex → $$(0,0)$$.
- Focus → $$(0,a)$$.
- Directrix → $$y=-a$$.
- Axis → $$y$$-axis.
Usage
- Used for a parabola opening upwards.
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Parabola Opening Towards Positive $$y$$-Axis
$$x^2=4ay$$
Terminology
- Vertex → $$(0,0)$$.
- Focus → $$(0,a)$$.
- Directrix → $$y=-a$$.
- Axis → $$y$$-axis.
Usage
- Used for a parabola opening upwards.
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