圆锥曲线中证明两点到直线距离相等,除了用点到直线距离(计算量太大了),还能用什么方法? 知乎 Template




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tomski圆锥曲线中证明两点到直线距离相等,除了用点到直线距离(计算量太大了),还能用什么方法? 知乎 coloring