(x+2/5)^2+(y-3/4)^2=3

解

(x + \frac{2}{5})^{2} + (y - \frac{3}{4})^{2} = 3

(a, b) = (- \frac{2}{5}, \frac{3}{4}), r = 3

解答ステップ

(x + \frac{2}{5})^{2} + (y - \frac{3}{4})^{2} = 3

(x + \frac{2}{5})^{2} + (y - \frac{3}{4})^{2} = 3

を標準的な円のequationの形式で書き換える

(x - (- \frac{2}{5}))^{2} + (y - \frac{3}{4})^{2} = (3)^{2}

ゆえに円の特性は:

(a, b) = (- \frac{2}{5}, \frac{3}{4}), r = 3