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证明数列a_n=的极限=1,是研究数列极限的一道有代表性的范题.本文用四种方法给出证明,并指出在证明时应该注意的问题. 方法一:用极限的分析定义证明
Prove that the limit of the series a_n==1 is a representative topic for studying the limit of the series. This paper uses four methods to give proofs, and points out the problems that should be paid attention to in the proof. Method 1: Proof of the analysis using the limit analysis