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Foci of a Vertical Ellipse
For:
$$\frac{x^2}{b^2}+\frac{y^2}{a^2}=1$$
the foci are:
$$S_1(0,-c),\quad S_2(0,c)$$
Usage
- Used when the major axis lies along the $$y$$-axis.
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Foci of a Vertical Ellipse
For:
$$\frac{x^2}{b^2}+\frac{y^2}{a^2}=1$$
the foci are:
$$S_1(0,-c),\quad S_2(0,c)$$
Usage
- Used when the major axis lies along the $$y$$-axis.
---
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