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直线与圆锥曲线相交是直线与圆锥曲线位置关系中一种,由此得到弦.在解决有关弦的问题中恰当使用到直线方程的假设会减少运算量.本文通过三个题目解法的对比分析,阐述了如何根据问题的条件、所求问题的特点以及圆锥曲线的特点选择恰当的直线方程形式.
The intersection of a straight line and a conic is one of the positions of a straight line and a conic, thereby obtaining a string. The assumption that proper use of a straight line equation in solving a string-related problem reduces the amount of computation.Through comparative analysis of the three- How to choose the right form of a straight line equation according to the conditions of the problem, the characteristics of the problem to be sought and the characteristics of the conic.