电子科技大学《高等数学(理科本科)》20春期末考试
2.(B)
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B: 答案:B
4.由分项积分法,不定积分,则上述运算中() A:1)步正确,第(2)步不正确 B:第(1)步正确,第(2)步也正确 C:第(1)步不不正确,第(2)步正确 D:第(1)不正确,第(2)步也不正确 答案:B
10.定积分,则有()
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1
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B:I的大小不确定 答案:B
16.定积分()
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B: 答案:A
11.下列积分等于零的是()
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B: C: D:
1