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本文通过对常见例题“过定点的动直线与已知定线段相交,求动直线的斜率的取值范围”的几种不同解法,揭示解析几何与其他章节的联系,充分应用数形结合的方法和等价转化、分类讨论的思想。
In this paper, several common solutions to several common solutions to the problem of “intersecting a given fixed line with a known fixed line segment and finding the range of the slope of a straight line” are given to reveal the connection between the analytic geometry and other chapters. The method and the equivalent conversion, classification discussion of ideas.