已知數列＜an＞及＜bn＞為收斂，而＜cn＞及＜dn＞為發散，則(A)＜an＋bn＞必為收斂 (B)＜an．bn＞有可能是發散 (C)＜bn－cn＞有可能是收斂 (D)＜cn．dn＞必為發散 (

問題詳情

2. 已知數列＜an＞及＜bn＞為收斂，而＜cn＞及＜dn＞為發散，則
(A)＜an＋bn＞必為收斂
(B)＜an．bn＞有可能是發散
(C)＜bn－cn＞有可能是收斂
(D)＜cn．dn＞必為發散
(E)＜cn / dn＞有可能是收斂

參考答案

答案：A,E
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)

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