问题
单项选择题
下列级数中收敛的是()。
A.A
B.B
C.C
D.D
答案
参考答案:B
解析:
当n→∞时,,由比较审敛法的极限形式,选项A、C、D错;选B,
是交错级数,满足莱布尼茨判别法条件。
下列级数中收敛的是()。
A.A
B.B
C.C
D.D
参考答案:B
解析:
当n→∞时,,由比较审敛法的极限形式,选项A、C、D错;选B,
是交错级数,满足莱布尼茨判别法条件。
根据句子意思,从方框中选用恰当的词或短语填空。
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