位置:首页 > 题库频道 > 学历类 > 升学考试 > 高中(高考) > 数学(文科) > 高中数学代数与函数一其他练习题851

已知函数f(x)的导函数的图象如图所示,给出下列四个结论: ①函数f(x)在区间(-3,1)内单调递减; ②函数f(x)在区间(1,7)内单调递减; ③当x=-3时,函数f(x)有极大值; ④当x=7时,函数f(x)有极小值. 则其中正确的是(  )

发布时间:2021-07-16

A.②④

B.①④

C.①③

D.②③ http://picflow.koolearn.com/upload/papers/20140611/201406111305392397420.png

试卷相关题目

  • 1函数y=f′(x)的图象如图所示,则f(x)的解析式可能是(  )

    A.y=x2-2x

    B.y=x2+2x

    C.y=x3+x2

    D.y=3x3-x2 http://picflow.koolearn.com/upload/papers/20140611/2014061113422839011571.png

    开始考试点击查看答案
  • 2设函数y=f(x)在定义域内的导函数为y=f′(x),y=f(x)的图象如图1所示,则y=f′(x)的图象可能为(  )

    A.http://picflow.koolearn.com/upload/papers/20140611/201406111409145691269.png

    B.http://picflow.koolearn.com/upload/papers/20140611/201406111409153331125.png

    C.http://picflow.koolearn.com/upload/papers/20140611/201406111409159571141.png

    D.http://picflow.koolearn.com/upload/papers/20140611/201406111409160201026.png http://picflow.koolearn.com/upload/papers/20140611/20140611140916082985.png

    开始考试点击查看答案
  • 3已知函数f(x)=在x=1处取极值,则a等于(  )

    A.5

    B.4

    C.3

    D.2

    开始考试点击查看答案
  • 4若函数 http://picflow.koolearn.com/upload/papers/20140823/20140823120215121508.gif上可导且 http://picflow.koolearn.com/upload/papers/20140823/20140823120215136691.gif时,下列不等式一定成立的是(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823120215152451.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823120215167450.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823120215183446.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823120215199451.gif

    开始考试点击查看答案
  • 5已知函数f(x)=x2+2x+alnx在(0,1)上单调,则实数a的取值范围是(  )

    A.a≥0

    B.a≤-4

    C.a≤-4或a≥0

    D.-4≤a≤0

    开始考试点击查看答案
  • 6若函数f(x)=4x3-ax2-2x+b在x=1处有极值,则a的值等于(  )

    A.2

    B.3

    C.5

    D.6

    开始考试点击查看答案
  • 7f(x)的导函数图象如图所示,则f(x)的增区间为(  )

    A.[0,1]

    B.(-∞,-1]

    C.(-∞,0]

    D.[0,+∞) http://picflow.koolearn.com/upload/papers/20140611/201406111424105102137.png

    开始考试点击查看答案
  • 8设f′(x)是函数f(x)的导函数,如果函数y=f′(x)的图象如图所示,那么下列结论一定正确的是(  )

    A.当x∈(0,1)时,f(x)>0

    B.当x∈(0,1)时,f(x)<0

    C.函数f(x)在区间(1,+∞)内单调递减

    D.函数f(x)在区间(-∞,0)内单调递增 http://picflow.koolearn.com/upload/papers/20140611/201406111324292583518.png

    开始考试点击查看答案
  • 9设函数f(x)在R上的导函数为f′(x),且2f(x)+xf′(x)<0,下面的不等式在R上恒成立的是(  )

    A.f(x)>0

    B.f(x)<0

    C.f(x)>x

    D.f(x)<x

    开始考试点击查看答案
  • 10函数 http://picflow.koolearn.com/upload/papers/20140823/20140823121123087353.gif的增区间为(       )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823121123087204.gif

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823121123103288.gif

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823121123118432.gif

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823121123134426.gif

    开始考试点击查看答案
返回顶部