论文部分内容阅读
逆向思维解题法是解答难度大的物理计算题的常用方法之一.所谓逆向思维解题就是从题目所要求的物理量开始分析,逐步列出有关计算式,直到各有关的物理量都能求得为止,分析过程结束.解题时,从分析的最后一步开始,逆着分析过程解至分析的第一步,求得答案,在解答过程适当注意文字说明.现举一例如下:
The reverse thinking problem solving method is one of the commonly used methods for solving difficult physical calculation problems. The so-called reverse thinking problem solving is to analyze the physical quantity required by the problem and gradually list the relevant formulas until all related physical quantities can be obtained. So far, the analysis process is over. When solving a problem, from the last step of the analysis, the solution to the first step of the analysis is reversed from the analysis process, and the answer is obtained. In the solution process, due attention is paid to the text description. An example is as follows: