1 . 已知函数f(x)的图象与函数h(x)=x+
+2的图象关于点A(0,1)对称.
(1)求f(x)的解析式;
(2)若g(x)=x2·[f(x)-a],且g(x)在区间[1,2]上为增函数,求实数a的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573083235647488/1573083241922560/STEM/530efc584a984ef4b096785a0d5598a9.png)
(1)求f(x)的解析式;
(2)若g(x)=x2·[f(x)-a],且g(x)在区间[1,2]上为增函数,求实数a的取值范围.
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2012·宁夏银川·一模
2 . 函数
的最小正周期为
,且
.当
时,
,那么在区间
上,函数
的图象与函数
的图象的交点个数是
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/3dce59c5feef4fd6a992d906decc14aa.png)
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/e5769c7a7b1d44b18aedf88fe8e00dc0.png)
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/8102e0cf141a45d4aed1db9af667a29c.png)
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/aae10e93903845db9e0dfb66ecdb6e9f.png)
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/21d0d06969e54273806949a902561ade.png)
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/0a33ae0eb3b8485aba8ca7f38a62a21e.png)
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/3dce59c5feef4fd6a992d906decc14aa.png)
![](https://img.xkw.com/dksih/QBM/2012/8/14/1570969016967168/1570969022324736/STEM/fdacb5885682446abbfdd62e25b14f5a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 下列四个图中,函数y=
的图象可能是
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572464509894656/1572464515751936/STEM/1348d31184dd45eb8d93caa175c63a2c.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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13-14高三上·山东青岛·期中
4 . 已知
且
,函数
在同一坐标系中的图象可能是( )
![](https://img.xkw.com/dksih/QBM/2014/1/21/1571497299804160/1571497305300992/STEM/adf0d06ef1a14017b59857120139feee.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2014/1/21/1571497299804160/1571497305300992/STEM/d9ffb8d22c0d4f459ed5d07488cdd195.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2014/1/21/1571497299804160/1571497305300992/STEM/0bab513952e34d9d849b8744474bb7f0.png?resizew=176)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 对于函数
,部分
与
的对应关系如下表:
数列
满足:
,且对于任意
,点
都在函数
的图像上,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![]() | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
![]() | 3 | 7 | 5 | 9 | 6 | 1 | 8 | 2 | 4 |
数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086e9b14c35ef3c57b20f5e952ebf9c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302b13a66072fb0e9bc6eb06a2bef202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://img.xkw.com/dksih/QBM/2015/4/2/1572061772513280/1572061778280448/STEM/87d29d244ae84422a5ea49ad689203e3.png?resizew=203)
A.7549 | B.7545 | C.7539 | D.7553 |
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