设函数
是定义在
上的单调函数,且
,
.若不等式
对
恒成立,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd18b91c1704fc0705ba3d8e10cb4f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33fdb3486bbaed2039cb20618c0efcd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9130c072936c7285818406e9d4adc0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97148e04ca6a9f9dca0aba91ce4e1d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-07-20 18:10:40
|
【知识点】 利用导数研究不等式恒成立问题
相似题推荐
单选题
|
较难
(0.4)
解题方法
【推荐1】已知函数
的图象与直线
恰好有一个交点.设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f46a13297035069791fec890b2d7f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c23adc2a79b93771e113e0364e44fa.png)
,当
时,不等式
恒成立,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88276487a0310944d1abb266f70304d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c422a1324c543caeee39426895f19c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f46a13297035069791fec890b2d7f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c23adc2a79b93771e113e0364e44fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f38ead5f1523f60d059faa857fac20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4a55abb13ac48c95218e94dbf7cca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4feddc398a0584bdf755d402d7e7fb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
【推荐2】已知函数
在
上恒不大于0,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43bfa3621233906621404f8e0c62e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.0 | D.1 |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
解题方法
【推荐3】对任意
,若不等式
恒成立,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7ac92c9fd8917757bbce4a05c1a244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次