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在用数学归纳法证明 http://picflow.koolearn.com/upload/papers/20140823/201408232248066341453.png时,在验证当 http://picflow.koolearn.com/upload/papers/20140823/20140823224806649341.png时,等式左边为(  )

发布时间:2021-07-12

A.1

B.http://picflow.koolearn.com/upload/papers/20140823/20140823224806665348.png

C.http://picflow.koolearn.com/upload/papers/20140823/20140823224806759464.png

D.http://picflow.koolearn.com/upload/papers/20140823/20140823224806790569.png

试卷相关题目

  • 1http://picflow.koolearn.com/upload/papers/20140823/20140823195307098464.png是定义在正整数集上的函数,且 http://picflow.koolearn.com/upload/papers/20140823/20140823195307098464.png满足:“当 http://picflow.koolearn.com/upload/papers/20140823/20140823195307301591.png成立时,总可推出 http://picflow.koolearn.com/upload/papers/20140823/20140823195307316754.png成立”. 那么,下列命题总成立的是(  )

    A.若http://picflow.koolearn.com/upload/papers/20140823/20140823195307394489.png成立,则http://picflow.koolearn.com/upload/papers/20140823/20140823195307425603.png成立;

    B.若http://picflow.koolearn.com/upload/papers/20140823/20140823195307457564.png成立,则http://picflow.koolearn.com/upload/papers/20140823/20140823195307519491.png成立;

    C.若http://picflow.koolearn.com/upload/papers/20140823/20140823195307706565.png成立,则当http://picflow.koolearn.com/upload/papers/20140823/20140823195307909400.png时,均有http://picflow.koolearn.com/upload/papers/20140823/20140823195308127602.png成立;

    D.若http://picflow.koolearn.com/upload/papers/20140823/20140823195308143609.png成立,则当http://picflow.koolearn.com/upload/papers/20140823/20140823195308159442.png时,均有http://picflow.koolearn.com/upload/papers/20140823/20140823195308127602.png成立

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  • 2.用数学归纳法证明 http://picflow.koolearn.com/upload/papers/20140823/20140823180449874988.png时,由k到k+1,不等式左端的变化是(    )

    A.增加http://picflow.koolearn.com/upload/papers/20140823/20140823180449998610.png

    B.增加http://picflow.koolearn.com/upload/papers/20140823/20140823180450014505.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823180450030534.png两项

    C.增加http://picflow.koolearn.com/upload/papers/20140823/20140823180450014505.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823180450030534.png两项且减少http://picflow.koolearn.com/upload/papers/20140823/20140823180450279434.png一项

    D.以上结论均错

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  • 3用数学归纳法证明等式 http://picflow.koolearn.com/upload/papers/20140823/201408232115229931619.png时,验证 http://picflow.koolearn.com/upload/papers/20140823/20140823211523009357.png,左边应取的项是 (  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823211523024291.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823211523040501.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823211523056573.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823211523087648.png

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  • 4用数学归纳法证明“ http://picflow.koolearn.com/upload/papers/20140823/201408231742548541117.gif”时, 由 http://picflow.koolearn.com/upload/papers/20140823/20140823174254869348.gif的假设证明 http://picflow.koolearn.com/upload/papers/20140823/20140823174254885382.gif时,如果从等式左边证明右边,则必须证得右边为(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823174255010572.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823174255041703.gifhttp://picflow.koolearn.com/upload/papers/20140823/2014082317425505665.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823174255072572.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823174255088615.gif

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  • 5用数学归纳法证明 http://picflow.koolearn.com/upload/papers/20140823/201408232121493121130.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823212149359520.png)时,从“ http://picflow.koolearn.com/upload/papers/20140823/20140823212149375412.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823212149593466.png”左边需增乘的代数式为(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823212149812442.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823212149827562.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823212149843540.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823212149968580.png

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  • 6利用数学归纳法证明 http://picflow.koolearn.com/upload/papers/20140823/201408232212314421713.png  时,从“ http://picflow.koolearn.com/upload/papers/20140823/20140823221231458412.png”变到“ http://picflow.koolearn.com/upload/papers/20140823/20140823221231474466.png”时,左边应增乘的因式是

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823221231505442.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823221231598541.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823221231614581.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823221231645799.png

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  • 7用数学归纳法证明等式 http://picflow.koolearn.com/upload/papers/20140824/20140824015200096948.png时,第一步验证 http://picflow.koolearn.com/upload/papers/20140824/20140824015200112350.png时,左边应取的项是

    A.1

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824015200128331.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824015200143440.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824015200159458.png

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  • 8用数学归纳法证明等式 http://picflow.koolearn.com/upload/papers/20140824/201408240118129041192.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824011812920577.png时,第一步验证 http://picflow.koolearn.com/upload/papers/20140824/20140824011812935353.png时,左边应取的项是(   )

    A.1

    B.1+2

    C.1+2+3

    D.1+2+3+4

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  • 9用数学归纳法证明不等式 http://picflow.koolearn.com/upload/papers/20140824/201408240156214901306.png,第二步由k到k+1时不等式左边需增加(      )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824015621506411.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824015621522607.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824015621537742.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824015621553829.png

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  • 10某个命题与正整数有关,如果当 n= k( k∈N +)时,该命题成立,那么可 推得当 n= k+1时命题也成立.现在已知当 n=5时,该命题不成立,那么可推得(  )

    A.当n=6时该命题不成立

    B.当n=6时该命题成立

    C.当n=4时该命题不成立

    D.当n=4时该命题成立

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