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转化,是一个问题转化为另一个问题的思考方法。解答数学中的应用题,善于调整应用题中的条件关系和题型结构,可使问题化难为易,化繁为简。 一、应用题中的关系转化 列方程(组)解应用题最重要的是发现其间的等量关系。根据题意,灵活地转化已知与未知条件的关系,选择合理的未知数,是布列方程(组)的关键之所在。
Conversion is a way of thinking that transforms one question into another. Answering the questions in mathematics, and being good at adjusting the conditional relationship and the question type structure in the application question, it can make the problem difficult and easy to change, and it can be simplified. First, the transformation of the relationship in the application of the problem The equation (group) solution to the application of the most important thing is to find the equal relationship between them. According to the meaning of the questions, the flexible transformation of the relationship between known and unknown conditions and the selection of reasonable unknowns are the keys to the equations (groups).