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根据高考数学科考试说明,“两点间的距离、点到直线的距离”及“导数的几何意义”等知识点的考试要求都是B级.求曲线上的点到直线距离涉及“平面解析几何初步”和“导数及其应用”二大章节,是高考中重点考查内容.其基本解题策略是利用点到直线的距离公式得到相应的距离函数,再借助求函数最值的方法(如基本不等式法、导数法、数形结合法等)求其最值得到所求最值.
According to the college entrance examination mathematics examination description, “distance between two points, point to a straight line distance ” and “the geometric meaning of the derivative ” and other knowledge points of the examinations are required to level B. Find the point on the curve to the straight line distance Involved The basic problem solving strategy is to use the distance from the point to the line to get the corresponding distance function formula, and then with the help of “plane analysis geometry preliminary ” and “derivative and its application ” two major chapters Find the value of the function of the method (such as the basic inequality method, derivative method, number combination method, etc.) to find the value of the most value.