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若不等式http://picflow.koolearn.com/upload/papers/g02/20110302/20110302115218165996.gif对于一切http://picflow.koolearn.com/upload/papers/g02/20110302/20110302115222899998.gif成立,则a的取值范围是

发布时间:2021-07-20

A.http://picflow.koolearn.com/upload/papers/g02/20110302/20110302115237243906.gif

B.http://picflow.koolearn.com/upload/papers/g02/20110302/20110302115242462943.gif

C.http://picflow.koolearn.com/upload/papers/g02/20110302/20110302115249165952.gif

D.http://picflow.koolearn.com/upload/papers/g02/20110302/20110302115255931900.gif

试卷相关题目

  • 1一元二次不等式http://picflow.koolearn.com/upload/papers/g02/20101221/201012211103348591014.gif的解集是http://picflow.koolearn.com/upload/papers/g02/20101221/201012211103395151154.gif,则a的值是

    A.10

    B.-12

    C.14

    D.-14

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  • 2若函数 http://picflow.koolearn.com/upload/papers/20140824/20140824023112300607.png的导函数为 http://picflow.koolearn.com/upload/papers/20140824/20140824023112315637.png,且 http://picflow.koolearn.com/upload/papers/20140824/201408240231123471253.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824023112300607.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023112393445.png上的单调增区间为(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824023112409607.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824023112425646.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824023112409607.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023112440576.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824023112409607.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824023112425646.png

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  • 3若关于x的不等式|x-2|+|x-a|≥a在R上恒成立,则a的最大值是(   )

    A.3

    B.1

    C.-1

    D.2

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  • 4若不等式|x-a|-|x|<2-a2当x∈R时总成立,则实数a的取值范围是(  )

    A.(-2,2)

    B.(-2,1)

    C.(-1,1)

    D.(-∞,-1)∪(1,+∞)

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  • 5已知 http://picflow.koolearn.com/upload/papers/20140824/20140824054858429562.png的解集为 http://picflow.koolearn.com/upload/papers/20140824/20140824054858445662.png, 则实数 http://picflow.koolearn.com/upload/papers/20140824/20140824054858476278.png等于(   )

    A.1

    B.2

    C.3

    D.4

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  • 6当x∈R时,不等式kx2-kx+1>0恒成立,则k的取值范围是

    A.(0,+∞)

    B.[0,+∞)

    C.[0,4)

    D.(0,4)

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  • 7不等式x2-3x+2<0的解集为

    A.(-∞,-2)∪(-1,+∞)

    B.(-2,-1)

    C.(-∞,1)∪(2,+∞)

    D.(1,2)

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  • 8若不等式http://picflow.koolearn.com/upload/papers/g02/20110812/20110812164141984885.gifx2+qx+p>0的解集为{x|2<x<4},则实数p与q的值分别是

    A.http://picflow.koolearn.com/upload/papers/g02/20110812/201108121641420001274.gif

    B.http://picflow.koolearn.com/upload/papers/g02/20110812/201108121641420001283.gif

    C.http://picflow.koolearn.com/upload/papers/g02/20110812/201108121641420151236.gifhttp://picflow.koolearn.com/upload/papers/g02/20110812/201108121641420151283.gif

    D.以上答案都不对

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  • 9若存在实数a∈[1,3],使得不等式ax2+(a-2)x-2>0成立,则实数x的取值范围是

    A.(-∞,-1)∪(2,+∞)

    B.[-1,http://picflow.koolearn.com/upload/papers/g02/20110815/20110815110431703881.gif]

    C.(-∞,-1)∪(http://picflow.koolearn.com/upload/papers/g02/20110815/20110815110431703881.gif,+∞)

    D.(-1,2)

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  • 10不等式http://picflow.koolearn.com/upload/papers/g02/20110827/20110827095807250921.gif(x-1)(x-2)2(x-3)<0的解集是

    A.(-1,1)∪(2,3)

    B.(-∞,-1)∪(1,2)∪(2,3)

    C.(-∞,-1)∪(1,3)

    D.{x|x<-3或x>2}

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