名校
解题方法
1 . 已知向量
,
,若向量
,
的夹角
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2807ecc81d36bee4048fa4d570895d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99204cc0147faef5556ac86e805ce74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6aacd7ee199596ae4d014efbdcacae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
2 . 已知
是定义在
上的奇函数,当
时,
,则( )
![](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/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eab61e15fc697f13758db0babf60d0b.png)
A.![]() ![]() |
B.函数![]() |
C.函数![]() |
D.![]() ![]() |
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名校
3 . 已知函数
.
(1)若
,证明:
在
上单调递减.
(2)
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e1b29621397c014d11ea7512002dab.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c7cb488a12b37aaa18c857e84dd35f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36858a8d6b59bb8b2cb6764ee1a6e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be7c16947880393a67771edd0bca0b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
4 . 已知
.
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9797fd3e3230e80ecfd92caac5795137.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f723045d3591a61445148936a29c4a9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6f19b84484b5480ea2100165abfd81.png)
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名校
解题方法
5 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68623cdce7d05e0d0a5c99e887a2a2f6.png)
_______________ ,
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ea538670b220a772bbfa1ea4d187f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68623cdce7d05e0d0a5c99e887a2a2f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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名校
解题方法
6 . 在空间直角坐标系
中,已知
,
,
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a834024400d0730af3e640ca4d5f54b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a323525af54c4ba2ea988930517fbc27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ad34c568d275e4e0dd965549568647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071c892c264394e359a806459190f336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aa183bba027521db0edd9d30eeebea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f3281082d329578907589ad09fa632.png)
A.![]() |
B.直线![]() ![]() ![]() |
C.从![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.从![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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名校
解题方法
7 . 下列判断正确的是( )
A.![]() |
B.由数字1,2,3,4可以组成24个无重复数字的四位数 |
C.由数字0,1,2,3,4可以组成120个无重复数字的五位数 |
D.若有4张参观券,要在8人中确定4人去参观,则有70种不同的方法 |
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名校
8 . 设
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc858c915f41d397340ea5a5f34e321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0322c13da93ade2525e3d62f25ee69b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/755dfada9d3e5ed9c2cce35ce48526af.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 12名学生与4名老师站成一排拍照,要求4名老师两两不相邻,则不同的排法数为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
10 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bf7651c96369f6c7f79f0f6c4ab066.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
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