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在圆锥曲线数值问题中,如何结合题目条件,根据圆锥曲线的定义、性质以及相应的思维方法来分析与处理是解决问题的关键.下面结合实例就圆锥曲线中数值问题的巧解加以实例剖析.一、妙用定义,巧求未知量圆锥曲线的定义揭示的是各对应的曲线的本质属性.对于涉及的圆锥曲线中的参数问题,若能巧妙灵活应用定义,往往能达到化繁为简、事半功倍的效果.例1.已知抛物线的顶点在原点,对称轴为x轴,抛物线上的点
In the conic numerical problem, how to combine the problem conditions, analyze and deal with the conic curve’s definition, nature and corresponding thinking method is the key to solve the problem. First, the magical definition, skillfully unknowing the definition of the conic revealed the nature of the corresponding curve of the curve For the parameters involved in the conic curve, if clever and flexible application of the definition can often be achieved to simplify, with less effort Example 1. Known parabolic vertex at the origin, the axis of symmetry is the x-axis, the point on the parabola