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2007年全国数学竞赛预赛山东赛区竞赛试题中,有这样一道题目,看似复杂,然细细品鉴,其解法灵活,思维发散,饶有趣味,笔者找到了7种解决途
In the 2007 national math competition preliminaries contest in the Shandong Division, there was such a problem. It seemed complicated and scrutinizing. The solution was flexible, thinking was radiant and interesting, and the author found 7 kinds of solutions.