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Directrices of a Vertical Ellipse
For:
$$\frac{x^2}{b^2}+\frac{y^2}{a^2}=1$$
the directrices are:
$$y=\pm\frac{a}{e}$$
Usage
- Used when the major axis is along the $$y$$-axis.
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Directrices of a Vertical Ellipse
For:
$$\frac{x^2}{b^2}+\frac{y^2}{a^2}=1$$
the directrices are:
$$y=\pm\frac{a}{e}$$
Usage
- Used when the major axis is along the $$y$$-axis.
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