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已知 http://picflow.koolearn.com/upload/papers/20140824/20140824042855727402.png,函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042855758817.png,若 http://picflow.koolearn.com/upload/papers/20140824/20140824042855774447.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824042855789317.png上是单调减函数,则 http://picflow.koolearn.com/upload/papers/20140824/20140824042855805283.png的取值范围是

发布时间:2021-07-16

A.http://picflow.koolearn.com/upload/papers/20140824/20140824042855821593.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824042855821642.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824042855852526.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824042855867571.png

试卷相关题目

  • 1已知函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042552879779.png.下列命题:(  ) ①函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042552895447.png的图象关于原点对称; ②函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042552895447.png是周期函数; ③当 http://picflow.koolearn.com/upload/papers/20140824/20140824042552926499.png时,函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042552895447.png取最大值;④函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042552895447.png的图象与函数 http://picflow.koolearn.com/upload/papers/20140824/20140824042552973462.png的图象没有公共点,其中正确命题的序号是

    A.①③

    B.②③

    C.①④

    D.②④

    开始考试点击查看答案
  • 2设函数f(x)=e x+x-2,g(x)=ln x+x 2-3.若实数a,b满足f(a)=0,g(b)=0,则  (  )

    A.g(a)<0

    B.f(b)<0

    C.0

    D.f(b)开始考试点击查看答案

  • 3定义在R上的函数 http://picflow.koolearn.com/upload/papers/20140824/20140824034941215447.png满足 http://picflow.koolearn.com/upload/papers/20140824/20140824034941230686.png,且 http://picflow.koolearn.com/upload/papers/20140824/20140824034941246611.png为偶函数,当 http://picflow.koolearn.com/upload/papers/20140824/20140824034941262546.png时,有(  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824034941293794.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824034941308714.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824034941324782.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824034941340796.png

    开始考试点击查看答案
  • 4已知函数 y= f( x),其导函数 y= f′( x)的图象如图所示,则 y= f( x) (  )  http://picflow.koolearn.com/upload/papers/20140824/201408240343088902410.jpg

    A.在(-∞,0)上为减函数

    B.在x=0处取极小值

    C.在(4,+∞)上为减函数

    D.在x=2处取极大值

    开始考试点击查看答案
  • 5函数f(x)的定义域为(0,+∞),且f(x)>0,f′(x)>0,则函数y=xf(x)(  )

    A.存在极大值

    B.存在极小值

    C.是增函数

    D.是减函数

    开始考试点击查看答案
  • 6函数 http://picflow.koolearn.com/upload/papers/20140824/20140824033952953544.png的单调递增区间为(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824033952969684.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824033953000490.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824033953016483.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824033953031952.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824033953047490.png

    开始考试点击查看答案
  • 7若函数 http://picflow.koolearn.com/upload/papers/20140824/20140824041451999785.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824041452015303.png上是单调函数,则实数 http://picflow.koolearn.com/upload/papers/20140824/20140824041452031283.png的取值范围是(    )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824041452046806.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824041452062474.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824041452093849.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824041452109521.png

    开始考试点击查看答案
  • 8函数 f( x)= xln x的单调递减区间是 (  )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824040516842725.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824040516858717.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824040516873657.png

    D.(e,+∞)

    开始考试点击查看答案
  • 9已知 http://picflow.koolearn.com/upload/papers/20140824/20140824044024499402.png,函数 http://picflow.koolearn.com/upload/papers/20140824/20140824044024531817.png,若 http://picflow.koolearn.com/upload/papers/20140824/20140824044024546447.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824044024562317.png上是单调减函数,则 http://picflow.koolearn.com/upload/papers/20140824/20140824044024593283.png的取值范围是(   )

    A.http://picflow.koolearn.com/upload/papers/20140824/20140824044024624593.png

    B.http://picflow.koolearn.com/upload/papers/20140824/20140824044024640642.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824044024655526.png

    D.http://picflow.koolearn.com/upload/papers/20140824/20140824044024671571.png

    开始考试点击查看答案
  • 10http://picflow.koolearn.com/upload/papers/20140824/20140824050333619447.png是定义在R上的奇函数,且 http://picflow.koolearn.com/upload/papers/20140824/20140824050333651525.png,当x>0时,有 http://picflow.koolearn.com/upload/papers/20140824/20140824050333666805.png恒成立,则不等式 http://picflow.koolearn.com/upload/papers/20140824/20140824050333697599.png的解集是 (   )

    A.(2,0) ∪(2,+∞)

    B.(2,0) ∪(0,2)

    C.(∞,2)∪(2,+∞)

    D.(∞,2)∪(0,2)

    开始考试点击查看答案
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