a_n -> 5 as n -> oo
b_n -> 3 as n -> oo
求 lim(n->oo) [Σ_[1,n-1] k(a_k)(b_n-k)]/n^2
收錄日期: 2021-04-24 10:18:02
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150121000015KK02335