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已知函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121640984799.gif,方程 http://picflow.koolearn.com/upload/papers/20140823/20140823121641000337.gif两个根分别在区间(0,1)与(1,2)内,则 http://picflow.koolearn.com/upload/papers/20140823/20140823121641016308.gif的取值范围为(    )

发布时间:2021-07-16

A.(http://picflow.koolearn.com/upload/papers/20140823/20140823121641062221.gif,1)

B.http://picflow.koolearn.com/upload/papers/20140823/20140823121641109642.gif

C.http://picflow.koolearn.com/upload/papers/20140823/20140823121641125329.gif

D.(http://picflow.koolearn.com/upload/papers/20140823/20140823121641062221.gif,2)

试卷相关题目

  • 1函数 http://picflow.koolearn.com/upload/papers/20140823/20140823120756995599.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823120757011273.gif上的最小值是( ) 

    A.4

    B.1

    C.2

    D.3

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  • 2若函数f(x)=alnx-x在区间(0,2)上单调递增,则有(  )

    A.a=2

    B.a≤2

    C.a≥2

    D.0<a≤2

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  • 3若函数f(x)=ax3+bx2+cx+d有极值,则导函数f′(x)的图象不可能是(  )

    A.http://picflow.koolearn.com/upload/papers/20140611/201406111322266891200.png

    B.http://picflow.koolearn.com/upload/papers/20140611/201406111322267821388.png

    C.http://picflow.koolearn.com/upload/papers/20140611/201406111322268291364.png

    D.http://picflow.koolearn.com/upload/papers/20140611/201406111322271881323.png

    开始考试点击查看答案
  • 4已知函数y=x3-3x,则它的单调递减区间是(  )

    A.(-∞,0)

    B.(-1,1)

    C.(0,+∞)

    D.(-∞,-1),(1,+∞)

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  • 5设x=1与x=2是函数f(x)=alnx+bx2+x的两个极值点.则常数a=(  )

    A.-23

    B.-1

    C.1

    D.2

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  • 6f(x)=3x-cos(2x)在(-∞,+∞)上(  )

    A.是增函数

    B.是减函数

    C.有最大值

    D.有最小值

    开始考试点击查看答案
  • 7定义域为 http://picflow.koolearn.com/upload/papers/20140823/20140823121640626206.gif的函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121640641884.gif,若关于 http://picflow.koolearn.com/upload/papers/20140823/20140823121640657187.gif的方程 http://picflow.koolearn.com/upload/papers/20140823/20140823121640672603.gif恰有5个不同的实数解 http://picflow.koolearn.com/upload/papers/20140823/20140823121640688860.gif等于(    )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823121640704226.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823121640719221.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823121640750230.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823121640844256.gif

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  • 8已知可导函数f(x)的导函数为g(x),且满足:①>0;②f(2-x)-f(x)=2-2x,记a=f(2)-1,b=f(π)-π+1,c=f(-1)+2,则a,b,c的大小顺序为(  )

    A.a>b>c

    B.a>c>b

    C.b>c>a

    D.b>a>c

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  • 9定义域R的奇函数f(x),当x∈(-∞,0)时f(x)+xf′(x)<0恒成立,若a=3f(3),b=f(1),c=-2f(-2),则(  )

    A.a>c>b

    B.c>b>a

    C.c>a>b

    D.a>b>c

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  • 10对于R上可导的任意函数f(x),若满足x?f′(x)≥0,则必有(  )

    A.f(-1)+f(1)<2f(0)

    B.f(-1)+f(1)>2f(0)

    C.f(-1)+f(1)≤2f(0)

    D.f(-1)+f(1)≥2f(0)

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