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在解答某些数学问题时,有时会遇到多种情况,需要对各种情况加以分类,并逐类求解,然后综合得解,这就是分类讨论法.分类讨论是一种逻辑方法,是一种重要的数学思想,同时也是一种重要的解题策略,它体现了化整为零、积零为整的思想
When answering certain mathematical problems, sometimes you will encounter multiple situations. You need to classify various situations and solve them class by class. Then you can solve them comprehensively. This is the classification discussion. Classification discussion is a logical method. This important mathematical idea is also an important problem solving strategy. It embodies the idea of zeroing and zeroing.