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不等式-x2+4x-4>0的解集是

发布时间:2021-07-20

A.R

B.image.png

C.(0,+∞)

D.(-∞,0)

试卷相关题目

  • 1当|m|≤1时,不等式﹣2x+1<m(x2﹣1)恒成立,则x的取值范围是

    A.(﹣1,3)

    B.(0,﹣1+http://picflow.koolearn.com/upload/papers/g02/20120821/20120821113517083736.png

    C.(﹣3,1)

    D.(﹣1+http://picflow.koolearn.com/upload/papers/g02/20120821/20120821113517142736.png,2)

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  • 2已知不等式ax2+bx+c>0的解集为{x|2<x<4},则不等式cx2+bx+a<0的解集为 

    A.{x|x>http://picflow.koolearn.com/upload/papers/g02/20120923/20120923152018076558.png}

    B.{x|xhttp://picflow.koolearn.com/upload/papers/g02/20120923/20120923152018204813.png}

    C.{x|http://picflow.koolearn.com/upload/papers/g02/20120923/20120923152018331554.pnghttp://picflow.koolearn.com/upload/papers/g02/20120923/201209231520184601285.png}

    D.{x|xhttp://picflow.koolearn.com/upload/papers/g02/20120923/20120923152018607808.pnghttp://picflow.koolearn.com/upload/papers/g02/20120923/201209231520187351382.png}

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  • 3在R上定义运算http://picflow.koolearn.com/upload/papers/g02/20111110/20111110143734343864.gif:xhttp://picflow.koolearn.com/upload/papers/g02/20111110/20111110143734343864.gify=x(1-y),若不等式(x-a)http://picflow.koolearn.com/upload/papers/g02/20111110/20111110143734359864.gif(x+a)<1对任意实数x成立,则

    A.-1<a<1

    B.0<a<2

    C.http://picflow.koolearn.com/upload/papers/g02/20111110/201111101437343901010.gif

    D.http://picflow.koolearn.com/upload/papers/g02/20111110/201111101437344211010.gif

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  • 4在R上定义运算⊙:a⊙b=ab+2a+b,则满足x⊙(x-2)<0的实数x的取值范围为

    A.(0,2)

    B.(-2,1)

    C.http://picflow.koolearn.com/upload/papers/g02/20111124/201111241409579531054.gif

    D.(-1,2)

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  • 5关于x的不等式x2+px-2<0的解集是(q,1),则p+q的值为 

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