已知
为定义在
上的连续函数,对
,都有
,且
时,
,若
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daa411c5dd962be28d44341b829ec4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916c6d3fb2fdc67421489f207c93903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6001f22bef4e297daa9aa5c29f6e57e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9badb720dc9579dbd625a67163ae45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-03-25 14:38:50
|
相似题推荐
单选题
|
较难
(0.4)
名校
解题方法
【推荐1】已知函数
的导函数为
,
,且
在R上为严格增函数,关于下列两个命题的判断,说法正确的是( )
①“
”是“
”的充要条件;
②“对任意
都有
”是“
在R上为严格增函数”的充要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
①“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc1a317e2e6f1caf1e67bf4073cf789.png)
②“对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e702d87b7d70bf870bc04ef6df889d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
A.①真命题;②假命题 | B.①假命题;②真命题 |
C.①真命题;②真命题 | D.①假命题;②假命题 |
您最近一年使用:0次
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|
较难
(0.4)
【推荐2】若关于x的方程
在R上存在4个不同的实根,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07575b0518fd6dce71c2afd3de832edb.png)
A. ![]() | B. ![]() | C. ![]() | D. ![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐3】对于定义域为
的函数
,若满足①
;②当
,且
时,都有
;③当
,且
时,都有
,则称
为“偏对称函数”.现给出四个函数:
;
;
;
.则其中是“偏对称函数”的函数个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104375baf5cef5eb92cfc7cf13b80193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272b446ed1e69d3aca1a68418e161411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7b0c34c4a6e7be6f08ef7b7829c4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968ba3c635b11f69fe2619e5d211d133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2f24b4fa5308650a244d954f78f09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4145c87ac2d98c73c3ac2c689bd78d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59744bb0742e27bec7280017b78db505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e18f5bbabde5bb43b8c6fb506d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf87620214cc07ed38c473fd18f2b9b2.png)
A.3 | B.2 | C.1 | D.0 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a488843777c1ee2ff5566d1034da9a2.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
,则满足
的a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5ad4a60af70068382e11b3032b168f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855ed9c830dade4e25382048de4fd800.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐3】已知函数
是定义在
上的偶函数,且
,若对任意的
,都有
成立,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8bd00a1b1c012681aab8513b755cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a5c5e106845cc7549bc3473818d31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6b1b046e6a88eb54406280053b5d16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次