《中小学数学》初中版2012年第1-2期杨军的《不同的解法不同的结论》一文,作者对同一问题,出现四个不同的结论产生疑惑,笔者对该文进行了认真的研读分析,形成了一些认识,写出来与各位同行研讨.为了方便说明,将原题摘录如下(解答从略):(图1中虚线段DQ系笔者所加) “Primary and secondary mathematics” junior high school version in 2012 1-2 Yang Jun’s “different solutions to different conclusions,” a text, the author of the same question, there are four different conclusions have doubts, the author of the text carefully studied Analysis, formed a number of understanding, write out and colleagues to discuss .In order to facilitate the explanation, the original title is excerpted as follows (answer omitted): (Figure 1 dotted line DQ Department added)