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求轨迹方程方法多变,灵活性较大,涉及了集合、方程、平面几何、向量等基础知识,渗透着运动与变化、类比与联想、方程思想、数形结合思想等,是中学解析几何的重点和难点,也是历年高考数学考查的一个热点.下面结合几个实例谈谈这类问题的“五招”常用求解方法,以供参考.1.直接法如果动点运动的条件就是一些几何量的等量关系,这些条件简单明确,不需要特殊的
Seeking trajectory equation method is variable and flexible, involving basic knowledge such as set, equation, plane geometry, vector, infiltration of movement and change, analogy and association, equation thought, Focus and difficulty, but also over the years college entrance examination math test hot. Here are some examples to talk about such issues “five strokes ” common solution method for reference .1 direct method if the conditions of moving point is some The same amount of geometric relationship, these conditions are simple and clear, do not need special