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近几年中考,在注重基础知识考查的同时,更注重对数学问题的分析与解决,这需要我们在具体情境中善于将陌生的、难以解决的问题转化为熟悉的、简单的问题。现结合2011年中考试题说明化归思想的应用。一、借助恒等变形化高次为低次
In recent years, senior high school entrance examination, pay attention to the basic knowledge test at the same time, pay more attention to the analysis and solution of mathematical problems, which requires us to be good at specific situations, the strange and difficult to solve the problem into a familiar, simple problem. Now combined with the 2011 exam questions explain the application of thought. First, with the equivalent of high-level deformation of low-level