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已知奇函数f(x)满足f(x+1)=f(x-l),给出以下命题:①函数f(x)是周期为2的周期函数;②函数f(x)的图象关于直线x=1对称;③函数f(x)的图象关于点(k,0)(k∈Z)对称;④若函数f(x)是(0,1)上的增函数,则f(x)是(3,5)上的增函数,其中正确命题的番号是( )

发布时间:2021-08-04

A.①③

B.②③

C.①③④

D.①②④

试卷相关题目

  • 1设定义在实数集上的函数f(x)对任意x∈R均有f(x)+f(2-x)=1,则这个函数的图象必关于(   )

    A.直线x=1对称

    B.点(1,1)对称

    C.点(1,http://picflow.koolearn.com/upload/papers/20140823/20140823230804841338.png)对称

    D.点(2,1)对称

    开始考试点击查看答案
  • 2函数 http://picflow.koolearn.com/upload/papers/20140823/20140823222721518679.png的图象是(   ) http://picflow.koolearn.com/upload/papers/20140823/201408232227215331821.pnghttp://picflow.koolearn.com/upload/papers/20140823/201408232227215491738.pnghttp://picflow.koolearn.com/upload/papers/20140823/201408232227215641776.pnghttp://picflow.koolearn.com/upload/papers/20140823/201408232227215961843.png

    A.

    B.

    C.

    开始考试点击查看答案
  • 3函数f(x)=x 3+bx 2+cx+d的大致图象如下图所示,则 http://picflow.koolearn.com/upload/papers/20140823/20140823221850102381.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823221850133374.png 等于(  )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823221850149397.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823221850164391.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823221850180422.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823221850211366.png http://picflow.koolearn.com/upload/papers/20140823/201408232218502271264.png

    开始考试点击查看答案
  • 4若直角坐标平面内的两点 http://picflow.koolearn.com/upload/papers/20140823/20140823233446246290.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823233446277333.png同时满足下列条件: ① http://picflow.koolearn.com/upload/papers/20140823/20140823233446246290.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823233446277333.png都在函数 http://picflow.koolearn.com/upload/papers/20140823/20140823233446340566.png的图象上; ② http://picflow.koolearn.com/upload/papers/20140823/20140823233446246290.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823233446277333.png关于原点对称.则称点对 http://picflow.koolearn.com/upload/papers/20140823/20140823233446402457.png是函数 http://picflow.koolearn.com/upload/papers/20140823/20140823233446340566.png的一对“友好点对” (注:点对 http://picflow.koolearn.com/upload/papers/20140823/20140823233446402457.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823233446480463.png看作同一对“友好点对). 已知函数 http://picflow.koolearn.com/upload/papers/20140823/201408232334464961334.png,则此函数的“友好点对”有(    )

    A.0对

    B.1对

    C.2对

    D.3对

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  • 5若直线y=2a与函数y=|a x-1|(a>0且a≠1)的图象有两个公共点,则实数a的取值范围是( )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823232905900429.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823232905931509.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823232905963535.png

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823232905978613.png

    开始考试点击查看答案
  • 6为了得到函数 http://picflow.koolearn.com/upload/papers/20140823/20140823225924564500.png的图象,只需把函数 http://picflow.koolearn.com/upload/papers/20140823/20140823225924580460.png的图象(   )

    A.向上平移一个单位

    B.向下平移一个单位

    C.向左平移一个单位

    D.向右平移一个单位

    开始考试点击查看答案
  • 7函数 http://picflow.koolearn.com/upload/papers/20140823/20140823215655706461.png的定义域为区间 http://picflow.koolearn.com/upload/papers/20140823/20140823215655722484.png,导函数 http://picflow.koolearn.com/upload/papers/20140823/20140823215655737496.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823215655722484.png内的图象如右图所示,则函数 http://picflow.koolearn.com/upload/papers/20140823/20140823215655706461.png在开区间 http://picflow.koolearn.com/upload/papers/20140823/20140823215655722484.png极值点个数为(  ) http://picflow.koolearn.com/upload/papers/20140823/201408232156558151572.png

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823215655831212.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823215655862298.png

    C.3个

    D.http://picflow.koolearn.com/upload/papers/20140823/20140823215655878254.png

    开始考试点击查看答案
  • 8已知函数 http://picflow.koolearn.com/upload/papers/20140823/20140823235025134447.png满足:①定义域为 http://picflow.koolearn.com/upload/papers/20140823/20140823235025196303.png;②对任意 http://picflow.koolearn.com/upload/papers/20140823/20140823235025212433.png,有 http://picflow.koolearn.com/upload/papers/20140823/20140823235025243668.png;③当 http://picflow.koolearn.com/upload/papers/20140823/20140823235025258477.png时, http://picflow.koolearn.com/upload/papers/20140823/20140823235025290579.png.则方程 http://picflow.koolearn.com/upload/papers/20140823/20140823235025305688.png在区间 http://picflow.koolearn.com/upload/papers/20140823/20140823235025336410.png内的解的个数是(    )  

    A.18

    B.12

    C.11

    D.10

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  • 9函数 http://picflow.koolearn.com/upload/papers/20140823/20140823234353167549.png的图像与函数 http://picflow.koolearn.com/upload/papers/20140823/20140823234353183619.png的图像关于直线 http://picflow.koolearn.com/upload/papers/20140823/20140823234353199402.png对称,则 http://picflow.koolearn.com/upload/papers/20140823/20140823234353214735.png (   )

    A.http://picflow.koolearn.com/upload/papers/20140823/20140823234353245368.png

    B.http://picflow.koolearn.com/upload/papers/20140823/20140823234353261291.png

    C.http://picflow.koolearn.com/upload/papers/20140823/20140823234353292388.png

    D.1

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  • 10函数 http://picflow.koolearn.com/upload/papers/20140823/20140823233521705628.png的图像( )

    A.关于http://picflow.koolearn.com/upload/papers/20140823/20140823233521720294.png轴对称

    B.关于http://picflow.koolearn.com/upload/papers/20140823/20140823233521736291.png轴对称

    C.关于直线http://picflow.koolearn.com/upload/papers/20140823/20140823233521767405.png对称

    D.关于原点对称

    开始考试点击查看答案
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