問題詳情
7.
(A) If both
and m are abolitely cnvergemt, than
(B) If
is convergent and
is divergent, then
must be divengent.
(C)Sugpose that f(x) is a positive and continuous function on [1,∞), and the improper integral
f(x) de is convergent. Let an = f(n), then
an is convergent.
n=1
(D) Ifan≤ bn for all n
is convergent, then
an must be convergent.
參考答案
答案:[無官方正解]
難度:計算中-1
書單:沒有書單,新增