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Standard Equation of a Parabola
$$y^2=4ax$$
Terminology
- $$a$$ → Distance of the focus from the vertex.
- Vertex → $$(0,0)$$.
- Focus → $$(a,0)$$.
- Axis → $$x$$-axis.
- Directrix → $$x=-a$$.
Usage
- Used for a parabola opening towards the positive $$x$$-axis.
