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高中数学代数与函数一其他练习题2

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  • 卷面总分:100分
  • 试卷类型:真题试卷
  • 测试费用:¥5.00
  • 试卷答案:有
  • 练习次数:0
  • 作答时间:60分钟

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高中数学代数与函数一其他练习题2

试卷预览

  • 81已知一个命题P(k),k=2n(n∈N),若n =1,2,…,1000时,P(k)成立,且当 http://picflow.koolearn.com/upload/papers/20140824/20140824010332829501.png时它也成立,下列判断中,正确的是(   )

    A.P(k)对k=2013成立

    B.P(k)对每一个自然数k成立

    C.P(k)对每一个正偶数k成立

    D.P(k)对某些偶数可能不成立

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  • 82观察式子: http://picflow.koolearn.com/upload/papers/20140824/20140824001446622566.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824001446638654.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824001446653724.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824001446669236.png则可归纳出式子( )

    A.http://picflow.koolearn.com/upload/papers/20140824/201408240014466851068.png

    B.http://picflow.koolearn.com/upload/papers/20140824/201408240014467161077.png

    C.http://picflow.koolearn.com/upload/papers/20140824/201408240014467311090.png

    D.http://picflow.koolearn.com/upload/papers/20140824/201408240014467311111.png

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  • 83已知n是正偶数,用数学归纳法证明时,若已假设n=k(k≥2且为偶数)时命题为真,则还需证明(  )

    A.n=k+1时命题成立

    B.n=k+2时命题成立

    C.n=2k+2时命题成立

    D.n=2(k+2)时命题成立

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  • 84下列代数式(其中k∈N *)能被9整除的是(  )

    A.6+6·7k

    B.2+7k-1

    C.2(2+7k+1)

    D.3(2+7k)

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  • 85用数学归纳法证明不等式2 n>n 2时,第一步需要验证n 0=_____时,不等式成立(    )

    A.5

    B.2和4

    C.3

    D.1

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  • 86用数学归纳法证明“(n+1)(n+2)·…·(n+n)=2n·1·3·…·(2n-1)”,从“k到k+1”左端需增乘的代数式为(  )

    A.2k+1

    B.2(2k+1)

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823214026820518.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823214026836572.png

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  • 87利用数学归纳法证明“1+a+a 2+…+a n +1 = http://picflow.koolearn.com/upload/papers/20140823/20140823213213657564.png, (a≠1,n∈N)”时,在验证n=1成立时,左边应该是(   )

    A.1

    B.1+a

    C.1+a+a2

    D.1+a+a2+a3

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  • 88用数学归纳法证明:1+ http://picflow.koolearn.com/upload/papers/20140823/20140823223533839336.png+ http://picflow.koolearn.com/upload/papers/20140823/20140823223533855325.png+ http://picflow.koolearn.com/upload/papers/20140823/201408232235338701083.png时,在第二步证明从n=k到n=k+1成立时,左边增加的项数是(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823223533886366.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823223533901412.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823223533917168.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823223533933391.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823223533948420.png

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  • 89观察式子: http://picflow.koolearn.com/upload/papers/20140823/20140823213453292628.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823213453307705.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823213453339819.png ……可归纳出式子为(  )。

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823213453370958.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823213453385967.png

    C.http://picflow.koolearn.com/upload/papers/20140823/201408232134534011004.png

    D.http://picflow.koolearn.com/upload/papers/20140823/201408232134534171049.png

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  • 90下面四个判断中,正确的是(  )

    A.式子1+k+k2+…+kn(n∈N*)中,当n=1时式子值为1

    B.式子1+k+k2+…+kn-1(n∈N*)中,当n=1时式子值为1+k

    C.式子1+http://picflow.koolearn.com/upload/papers/20140824/20140824044642004478.png+…+http://picflow.koolearn.com/upload/papers/20140824/20140824044642020496.png(n∈N*)中,当n=1时式子值为1+http://picflow.koolearn.com/upload/papers/20140824/20140824044642004478.png

    D.设f(x)=http://picflow.koolearn.com/upload/papers/20140824/20140824044642067774.png(n∈N*),则f(k+1)=f(k)+http://picflow.koolearn.com/upload/papers/20140824/20140824044642082854.png

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