名校
1 . 已知
为常数
,对任意
,均有
恒成立.下列说法:
①
的周期为
;
②若
为常数)的图像关于直线
对称,则
;
③若
且
,则必有
;
④已知定义在
上的函数
对任意
均有
成立,且当
时,
;又函数
为常数),若存在
使得
成立,则
的取值范围是
.其中说法正确的是____ .(填写所有正确结论的编号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d781452902a2f787f1d9296338741879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47c9d7407cc10f79a42882c2bffab79.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db57b61c85b039d829c4d0ead114b52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d40aae4110ea16d0c869a135dcf6af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ab55208f5d80ef537205fcca80a9ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245d2a2eb49cb300ebac1f0b7455dab7.png)
④已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17637bcc2877b4e70ef695d0522d48a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97ab84192e12bb292bc9fbd0b29fbee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1275f567f4313471df4daad443743f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b65152307156e7e90157f02590af14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa458f5b31cc34a571936e60357520f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f35d70b53356195cab0cf1a21a0d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0e81c4720e3a600f83bc64ec3494c8.png)
您最近一年使用:0次
名校
2 . 已知函数
,a为实数.
(1)若函数
为奇函数,求实数a的值;
(2)若函数
在
为增函数,求实数a的取值范围;
(3)是否存在实数
,使得
在闭区间
上的最大值为2,若存在,求出a的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6379146d49902a740e6db7d37211308.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5432187d1c042787433b7633292d00fe.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361c705ee72bb9a0be528f458bdbe457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65003491d1f0ea4f46d57e90270e142.png)
您最近一年使用:0次
2017-11-07更新
|
1518次组卷
|
3卷引用:广西南宁四中2019-2020学年高一上学期期中段考数学试题