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我们知道,很多数学问题的解决,是通过分析已知条件和所求结论之间的异同,并不断减少目标差来完成的,这样的解题分析称为差异分析。这种方法的运用主要就是弄清题意,也就是知道已知是什么,求解的是什么,已知条件和求解的结论有哪些差异,再逐步想办法消除差异,这样得到的解法就会比较自然。
We know that many mathematical problems are solved by analyzing the similarities and differences between the known conditions and the conclusions and reducing the target difference continuously. Such problem-solving analysis is called difference analysis. The main application of this method is to find out the meaning, that is, to know what is known, what is the solution, what are the differences between the known conditions and the conclusion of the solution, and then to gradually find ways to eliminate the difference so that the solution obtained will be compared natural.