ellipse - Turing のブログ

ellipse

${\frac {x^{2}}{a^{2}}}+{\frac {y^{2}}{b^{2}}}=1$

$y = \pm b \sqrt a 2 - x 2 / a$ $x$

$(\pm \sqrt a 2 - b 2$ ，0 $)$

$y =$ $\pm b \sqrt a 2 - x 2 / a(x - \sqrt a 2 - b 2)$ $x \pm b \sqrt a 2 - x 2 \sqrt a 2 - b 2 / a(x - \sqrt a 2 - b 2)$

$T.theodor 2022.7.31$