x^2+y^2=259

解答

x^{2} + y^{2} = 259

(a, b) = (0, 0), r = 259

求解步骤

x^{2} + y^{2} = 259

将

x^{2} + y^{2} = 259

改写为圆标准方程

(x - 0)^{2} + (y - 0)^{2} = (259)^{2}

因此圆的性质是:

(a, b) = (0, 0), r = 259

x^{(2)} + (y - 3)^{(2)} = 16

x^{2} + 14 x + 7 + y^{2} + 12 y + 6 = - 21 + 7 + 6

(x + 2)^{2} + (y - 9)^{2} = 144

16 - x^{2} + 2 x - y^{2} - 4 y - 5 > 0

(x - 3)^{2} + (y + 6)^{2} = 16