已知函数
,对于任意的
,方程
仅有一个实数根,则
的取值范围( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49117a24d318fb15c720d46e6438af31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b798675af4f4d72383a5b2c43db2c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84cee0101d36917f4012bc612cbca2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2021-03-06 22:26:58
|
【知识点】 由cosx(型)函数的值域(最值)求参数解读
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】将函数
的图象向右平移
个单位,在向上平移一个单位,得到
的图象.若
,且
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3f89961ba9755908d04807ed9d702f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff990f82bc8231d14fa10621fca4bfb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be778b5e2c32bd2b5cf752a2c2896b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b082ca1e0972322e5312645003cb92d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】已知函数
的最小正周期为
,若
,且
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cecf9fb885b04468106087f001b0f96a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15a62f224b92b51fccd75e50c53912b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3212a7314bafe3019f5f9d1ebadca9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次