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2 用好定点条件,提高知识的综合应用能力对于由两个定点(A、B)所引发派生的动点(C)的轨迹问题,求解时,宜将注意力放在△ABC 上,用好与定点相关联的各种条件,充分利用几何、三角和代数等各种知识与方法,灵活求解,不宜拘泥于坐标解析法.应尽量避免盲目列写方程算式,机械推演瞎碰的不良做法.在历年的高考数学试题中,含两个定点的轨迹问
2 Use good fixed-point conditions to improve the comprehensive application of knowledge For the trajectory of the derived point (C) derived from the two fixed points (A, B), when solving, we should pay attention to △ABC, use well Various conditions associated with fixed points, make full use of various knowledge and methods such as geometry, trigonometry, and algebra, and solve flexibly, and should not be rigidly adhered to the coordinate analysis method. It should be avoided to blindly write formula equations and mechanical deductions. In the mathematics questions of the college entrance examination over the years, there are two fixed-point trajectories