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分类讨论是“化整为零,各个击破,再积零为整”的数学策略.学习这种思想方法解决问题,对提高学习思维能力、解决问题的能力有很大作用.
Classification discussion is a mathematics strategy of “diagnosing to zero, destroying each other, and zeroing for the whole”. Learning this way of thinking to solve problems has a great effect on improving the ability to learn thinking and solve problems.