从一道习题谈能力的培养和思维的训练

The fostering of ability and the training of thinking from an exercise

首先就中学课本上一道习题的处理 ,提出质疑 ;接着 ,对解题思路作了多方的分析 ;最后 ,又探讨了题目的发现和推广。

This paper queries the solution of an exercise in the textbook of high school,analyses the train of thought of this exercise in many ways,and discusses the discovery and the extension about this exercise.