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好的竞赛题留下很大的拓展空间,2015年全国高中数学联赛安徽省初赛第2题就是这样的好题.本文对该题的解题过程作些分析,并探讨其知识背景与多样解法,给出三种解法.
Good contest left a lot of room for development, the 2015 National High School Math Championships Anhui Province Preliminary Round 2 is such a good topic.This paper analyzes the problem-solving process some of the problems and to explore its knowledge background and diverse solutions , Gives three solutions.