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如果将学习数学比做是人生中的一次探险,那么,直线与圆锥曲线的关系问题则好似我们前进道路上的悬崖峭壁,让我们望而却步,踌躇不前.而这类问题却是高考的重点,对考生的能力水平要求较高,重视思维逻辑,题目切入口宽,灵活度较大,同时计算步骤繁琐,耗时费力,往往事倍功半.当我们在使用传统解析法解答时,常常因为求交点而带来复杂的运算.如果将直线的参数方程应用于求解直线过定点与涉及线段长度的一类问题,
If we compare learning mathematics to life adventure, then the problem of the relationship between the straight line and the conic curve is similar to the cliffs on the way of our progress, which makes us stay away from each other.However, these kinds of problems are the focus of the college entrance examination, The ability of the candidates require a higher level of emphasis on the logic of thinking, the problem cut wide entrance, more flexibility, while the calculation steps cumbersome, time-consuming and often less effective when we use the traditional analytical method to solve the problem, often because of the intersection and Resulting in complicated operations.If the linear parametric equation is applied to solve a class of problems of linear over-point and line segment length,