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在解答某些数学问题时,因为存在一些不确定的因素,解答无法用统一的方法或结论给出统一的表述,对这类问题同学们需要依情况加以分类,并逐类求解.这种解题的方法叫分类讨论,它是一种极其重要的数学思想方法.它有利于培养和发展同学们思维的条理性、缜密性、灵活性.近年来运动型试题成为了中考数学试题的热点题型之一,解决此类试题,分类讨论的思想尤为重要,希望同学们谨记心间,现就此类问题的分析与解决方法举几例予
When solving some math problems, because of some uncertain factors, the solution can not give a uniform expression by a unified method or conclusion. Students of such problems need to be classified according to the situation and solved by class. It is a kind of extremely important mathematics thought method, which is helpful to train and develop the organizedness, meticulousness and flexibility of students’ thinking. In recent years, the exercise type test has become a hot topic in the senior high school entrance examination math test One of the type, to solve such questions, the idea of classification is particularly important, I hope students will keep in mind, now on the analysis and solution of such problems to give a few examples