题目内容
(请给出正确答案)
[主观题]
For __________ of experience and courage few teams dared to play that football team.
A. Lack
B. shortage
C. absence
D. need
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A. Lack
B. shortage
C. absence
D. need
级数对所有x收敛到ex.
(1)求dex/ex的级数.是否得到ex的级数?说明理由。
(2)求∫exdx的级数.是否得到ex的级数?说明理由。