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在解题实践中,我们经常运用“特殊化”法解题,即借助赋特殊值、构特殊点、用特殊函数及画特殊图形来解题的方法,有时显得非常简洁、明快,给成功解题的现象带来很多便利.但也发现部分或者存在过度依赖特殊化,笔者觉得有必要对“特殊化”法进行一番反思——“特殊化”法何时有效,何时无效?如何正确理解与合理运用“特殊化”法?下面通过几个案例作一分析.
In practice, we often use “specialization ” method to solve the problem, that is, by means of special values, constructing special points, using special functions and drawing special graphics to solve problems, it is sometimes very concise, The phenomenon of successful problem solving has brought a lot of convenience, but also found that some or over-dependence on specialization, I think it is necessary to reflect on “specialization ” method - “specialization ” law when valid, When invalid? How to correctly understand and rational use “Specialization ” method? The following analysis by several cases.