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用数学归纳法证明 http://picflow.koolearn.com/upload/papers/20140824/20140824020232553959.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824020232568677.png),在验证当n=1时,等式左边应为

发布时间:2021-07-12

A.1

B.1+a

C.1+a+a2

D.1+a+a2+a3

试卷相关题目

  • 1用数学归纳法证明1+a+a 2+ +a n +1= http://picflow.koolearn.com/upload/papers/20140824/20140824011942869562.png (n∈N *,a≠1),在验证n=1时,左边所得的项为(  )

    A.1

    B.1+a+a2

    C.1+a

    D.1+a+a2+a3

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  • 2用数学归纳法证明 http://picflow.koolearn.com/upload/papers/20140823/201408232344546631770.png时,由 http://picflow.koolearn.com/upload/papers/20140823/20140823234454694412.png的假设到证明 http://picflow.koolearn.com/upload/papers/20140823/20140823234454709466.png时,等式左边应添加的式子是(   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823234454741653.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823234454756595.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823234454772518.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823234454787925.png

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  • 3用数学归纳法证明: http://picflow.koolearn.com/upload/papers/20140824/201408240124430761506.png,第二步证明“从 http://picflow.koolearn.com/upload/papers/20140824/20140824012443092312.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824012443108375.png”,左端增加的项数是(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824012443123206.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824012443139291.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824012443154389.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824012443154489.png

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  • 4用数学归纳法证明“ http://picflow.koolearn.com/upload/papers/20140823/20140823225658517327.png”对于 http://picflow.koolearn.com/upload/papers/20140823/20140823225658532450.png的正整数 http://picflow.koolearn.com/upload/papers/20140823/20140823225658548203.png均成立”时,第一步证明中的起始值 http://picflow.koolearn.com/upload/papers/20140823/20140823225658564344.png应取(   )

    A.1

    B.3

    C.6

    D.10

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  • 5在数列{a n}中,a n=1- http://picflow.koolearn.com/upload/papers/20140823/20140823230754295339.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823230754311325.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823230754342303.png+…+ http://picflow.koolearn.com/upload/papers/20140823/20140823230754358480.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823230754373441.png,则a k +1等于(  )

    A.ak+http://picflow.koolearn.com/upload/papers/20140823/20140823230754420479.png

    B.ak+http://picflow.koolearn.com/upload/papers/20140823/20140823230754436516.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823230754451525.png

    C.ak+http://picflow.koolearn.com/upload/papers/20140823/20140823230754436516.png

    D.ak+http://picflow.koolearn.com/upload/papers/20140823/20140823230754420479.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823230754436516.png

    开始考试点击查看答案
  • 6在用数学归纳法证明凸n边形内角和定理时,第一步应验证(  )

    A.n=1时成立

    B.n=2时成立

    C.n=3时成立

    D.n=4时成立

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  • 7用数学归纳法证明: http://picflow.koolearn.com/upload/papers/20140823/20140823225346059595.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823225346106531.png)能被 http://picflow.koolearn.com/upload/papers/20140823/20140823225346122410.png整除.从假设 http://picflow.koolearn.com/upload/papers/20140823/20140823225346137409.png成立到 http://picflow.koolearn.com/upload/papers/20140823/20140823225346168468.png成立时,被整除式应为(    )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823225346184661.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823225346402682.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823225346418635.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823225346449591.png

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  • 8http://picflow.koolearn.com/upload/papers/20140824/20140824020515651451.png是定义在正整数集上的函数,且 http://picflow.koolearn.com/upload/papers/20140824/20140824020515651451.png满足:“当 http://picflow.koolearn.com/upload/papers/20140824/20140824020515682629.png成立时,总可推出 http://picflow.koolearn.com/upload/papers/20140824/20140824020515698700.png成立”,那么,下列命题总成立的是(  )

    A.若http://picflow.koolearn.com/upload/papers/20140824/20140824020515713566.png成立,则http://picflow.koolearn.com/upload/papers/20140824/20140824020515745602.png成立

    B.若http://picflow.koolearn.com/upload/papers/20140824/20140824020515760601.png成立,则当http://picflow.koolearn.com/upload/papers/20140824/20140824020515776373.png时,均有http://picflow.koolearn.com/upload/papers/20140824/20140824020515854620.png成立

    C.若http://picflow.koolearn.com/upload/papers/20140824/20140824020515869596.png成立,则http://picflow.koolearn.com/upload/papers/20140824/20140824020515885573.png成立

    D.若http://picflow.koolearn.com/upload/papers/20140824/20140824020515901599.png成立,则当http://picflow.koolearn.com/upload/papers/20140824/20140824020515916404.png时,均有http://picflow.koolearn.com/upload/papers/20140824/20140824020515854620.png成立

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  • 9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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  • 10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

    开始考试点击查看答案
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