1 . 若存在实数
使等式
在实数范围内成立,则
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4afa24a543fceb7c8f4beca0a7c7ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd11d271648caf5120cc68431f64be81.png)
A.3 | B.![]() | C.2 | D.![]() |
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2 . 若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab87accf1942ab80def96d12ef173163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd141da15b0d2efae4599c35a4e6e29.png)
A.既是奇函数又是增函数. |
B.既是奇函数又是减函数. |
C.既是偶函数又是增函数. |
D.既是偶函数又是减函数. |
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3 . 若
,
,且
,则
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731bdc8d2686a05f12a2ba8a7e3b01be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f081a3f53c554606272712aa9df2a97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6afd95707eeb4740c8b2316b7a9139.png)
A.等于![]() | B.等于1 | C.等于0 | D.不是与![]() ![]() |
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4 . 设集合
,
.则
中元素个数是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53983cd78563abfa6cd7eff54ce7fac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aafc2e41a76ee089da1b8c98dfaaffdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81919684bc4047d376c7e57dc6c8f1c.png)
A.1 | B.2 | C.3 | D.4 |
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5 . 若偶函数
在
上是增函数,设
,则
的大小关系是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b07d648faf45fe215a0ec78f10c167a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed776ce4144fc4431a057476fa4fed64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d90d7f054e8f0346479e1999622f11cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2007高三·四川·竞赛
6 . 已知图中曲线
,
,
,
是对数函数
的图象,则曲线
,
,
,
相应的
值依次为.
![](https://img.xkw.com/dksih/QBM/2018/12/5/2090244302790656/2091903740739584/STEM/39ea2d5b381b4b23986ae1b6a333ca76.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384bef25d6a7f4c661e83498628c1409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384bef25d6a7f4c661e83498628c1409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://img.xkw.com/dksih/QBM/2018/12/5/2090244302790656/2091903740739584/STEM/39ea2d5b381b4b23986ae1b6a333ca76.png?resizew=176)
A.3,2,![]() ![]() | B.2,3,![]() ![]() |
C.2,3,![]() ![]() | D.3,2,![]() ![]() |
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7 . 设a为实数,要使得对任何的
,均有
.则所有满足上述要求的
组成的集合为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2a55f7f0f221a24ef17947607b607c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55b4d93e6f26a3b8df2a62e8d6b8c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2018-12-07更新
|
128次组卷
|
2卷引用:2016年全国高中数学联赛天津赛区预赛试题
8 . 已知
.若对任意的
有
,则实数
的取值范围是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9682bf07aafb92db3dab93c92267d8ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e442689b4c5cdae7a8cbb2cefe0854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 .
和
两者大小关系是(其中e是自然对数的底,π是圆周率)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc237fcdcd28fd9f7863611a574e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d80122ba51d3963b3ede94172b3a0a.png)
A.![]() |
B.![]() |
C.![]() |
D.不能确定它们大小关系. |
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10 . 已知函数
.则
的值域为.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a746fa43869fe4a7002a754fb16f8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次