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本人阅读了吕建恒老师的《中学生数学》2008年9月上(高中)的《一道加拿大奥赛题的证明思路及方法》受益非浅,现我补充下列证法供同学们交流与参考.为了方便,录入原题如下:
I have read Prof. Lu Jianheng's “Mathematics for Secondary School Students” in September 2008 (high school) “proof of a Canadian Odyssey ideas and methods” benefited greatly, and now I add the following card for students to exchange and reference.For convenience, Enter the original title is as follows: