所谓的“化归”。化就是变化原问题,转化原问题,变换原问题;归,说的是变化、转化、变换原问题是有目的、有方向的。在高中数学中所用到的数学思想有:数形结合思想、函数思想、等价转化思想、分类讨论思想等,其实归根结底都是化归思想。因此它是高中阶段数学思想的精髓,是各种思想方法的基础,是解决问题的最常用的的方法,是一种基本的思维策略。在高考备考复习中我们更应善于利用化归思想对对同一类型问题进行归类,从而达到触类旁通,举一反三,提高复 The so-called “return ”. Transformation is the original problem of change, the original problem of transformation, the original problem of transformation; the second argument of transformation, transformation and transformation is purposeful and directional. Mathematical ideas used in high school mathematics are: digital combination of thinking, functional thinking, equivalence into thinking, classification and discussion of ideas, in fact, are ultimately converted to thought. Therefore, it is the essence of high school mathematics thought, is the basis of various ways of thinking, is the most commonly used method to solve the problem, is a basic thinking strategy. In the college entrance examination pro forma review we should be good at using the return to the ideological right to classify the same type of problem, so as to achieve the type of bypass, give top priority and improve the complex