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亲爱的同学,请留心你身边的数学现象,随时用笔记下你发现的数学问题及你解决问题的方法和过程;在你的学习过程中,如果你
Dear classmates, please pay attention to the mathematics around you, and use the notes to find out the math problems you discovered and the methods and processes for solving the problems; during your learning process, if you