ellipse 之 centrifugal force ハ、短径 b ニ近付ク程速ク、長径 a ニ近付ク程遅ク、力学系ハ、不均一ニシテ、circ ler = √ab ニ等シイ。 T.theodor 2022.8.21
x2+(y−r)2 = r2 y = √x-0.1 デ囲マレル area ヲ求メヨ。 T.theodor 2022.8.21
focus et directrix ハ、παραβολή 之後ニ在リ。 T.theodor 2022.8.21
focus ヲ通ル直線 y = ax+b ト Hyperbola 之囲ム area ヲ求メヨ。 T.theodor 2022.8.21
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