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“质点运动”中图形重叠面积问题对学生来说是难点.解决这类问题的关键是,根据几何图形的点和线出现不同位置的情况,分类讨论解决问题.下面举例说明分类讨论思想在解决此类问题中的运用.
The problem of graphic overlap area in Particle Movement is difficult for students.The key to solve this kind of problem is to classify and solve the problem according to the different positions of the points and lines of the geometric figure.The following is an example of the classification discussion In solving such problems in the application.