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在数学解题中,常常会因解题的需要,提出一些假设,从而使问题获解,但有时因假设不当,使问题致错也时有发生,现给出一些实例,以期引起注意．
In mathematics problem solving, we often make some assumptions to solve the problem, so as to solve the problem, but sometimes mistakes are made because of incorrect assumptions. Now we give some examples to attract attention.