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大一新生 发表于 2018-7-24 05:39 数列$\{x_n\}$满足$x_n=n+\tan n,n\in\mathbb N^{\ast}$,那么数列$\{x_n\}$是否有下界?
hbghlyj 发表于 2024-10-5 17:42 证明采用连分数逼近:Does the sequence n+tan(n),n∈N have a lower bound?
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