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初中阶段的代数最值问题一般利用函数思想求解,几何最值问题往往比较灵活,具有很强的探索性,解题时需要运用动态思维,难度较大.近年来,几何最值问题在中考频繁出现,且形式新颖,往往让人无从下手,其中一类线段的最值问题越来越受到青眯,这类线段具有如下特点:一个端点为定点,另一个端点为动点.这类问题如何找到突破口?追踪相关动点的生成过程,研究其运动轨迹是较为有效的方式.初中阶段的运动轨迹通常为直线或圆,运动轨迹为圆(或
In the junior middle school, the most algebraic problem in the junior middle school is usually solved by the function thought. The most value problem in geometry is often more flexible and exploratory. Therefore, it is more difficult to solve the problem by using dynamic thinking. In recent years, Appear, and new forms, often make people unable to start, one of the most value of the line segment more and more subject to Green Mi, this line has the following characteristics: one endpoint for the fixed point and the other endpoint for the moving point. Find a breakthrough? Track the generation process of the relevant points to study its trajectory is more effective way.Motor trajectory is usually a straight line or circle, the trajectory of the circle (or