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设a=http://picflow.koolearn.com/upload/papers/g02/20120518/20120518151329280393.png(sinx+cosx)dx,则二项式http://picflow.koolearn.com/upload/papers/g02/20120518/201205181513293231802.png展开式中不含x2项的系数和是

发布时间:2021-07-12

A.-192

B.193

C.-6

D.7

试卷相关题目

  • 1下列等式中不正确的是 

    A.Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342221485.png+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342247429.png+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342272481.png+…+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342298342.png=2http://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342325333.png

    B.Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342351429.png+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342377493.png+…+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342402342.png=2http://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342430480.png

    C.Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342456485.png+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342481481.png+…=Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342507429.png+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342533493.png+…

    D.Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342559485.png+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342585481.png+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342610477.png+…+Chttp://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342635342.png=2http://picflow.koolearn.com/upload/papers/g02/20120704/20120704161342661480.png(n为正偶数)

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  • 2(2x+1)6展开式中x2的系数为

    A.30

    B.120

    C.60

    D.15

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  • 3http://picflow.koolearn.com/upload/papers/g02/20120604/201206041628557561833.png展开式的各项系数和为http://picflow.koolearn.com/upload/papers/g02/20120604/20120604162855799701.png,则展开式中常数项是

    A.-7

    B.7

    C.http://picflow.koolearn.com/upload/papers/g02/20120604/20120604162855841625.png

    D.http://picflow.koolearn.com/upload/papers/g02/20120604/20120604162855882577.png

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  • 4http://picflow.koolearn.com/upload/papers/g02/20120515/20120515152523668505.png的展开式中,常数项为15,则n= 

    A.3

    B.4

    C.5

    D.6

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  • 5在(x+y)n展开式中第4项与第8项的系数相等,则展开式中系数最大的项是  

    A.第6项

    B.第5项

    C.第5、6项

    D.第15、7项

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  • 6若(x+http://picflow.koolearn.com/upload/papers/g02/20120731/20120731100439949286.png)n展开式的二项式系数之和为64,则展开式的常数项为

    A.10

    B.20

    C.30

    D.120

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  • 7已知关于x的二项式http://picflow.koolearn.com/upload/papers/g02/20120902/201209021803067392081.png展开式的二项式系数之和为32,常数项为80,则a的值为

    A.1

    B.±1

    C.2

    D.±2

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  • 8http://picflow.koolearn.com/upload/papers/g02/20120915/201209151552019961943.png的展开式的各项系数之和为M,二项式系数之和为N,若M﹣N=240,则展开式中x3的系数为

    A.﹣150

    B.150

    C.﹣500

    D.500

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  • 9http://picflow.koolearn.com/upload/papers/g02/20121022/20121022092238729619.png的展开式中,x5的系数是

    A.-297

    B.-252

    C.297

    D.207

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  • 10对于二项式http://picflow.koolearn.com/upload/papers/g02/20120515/20120515134206674758.png四位同学作出四种判断: ①存在n∈N*,展开式中有常数项;②对任意n∈N*,展开式中没有常数项; ③对任意n∈N*,展开式中没有x的一次项;④存在n∈N*,展开式中有x的一次项; 上述判断正确的是   

    A.①与③

    B.②与③

    C.②与④

    D.①与④

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