名校
1 . 在等差数列
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f95639ea0eef3c14bce022578f01f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
A.4 | B.5 | C.6 | D.8 |
您最近一年使用:0次
名校
解题方法
2 . 已知向量
,若
与
的夹角为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6b0b980652e18b01af0d830de9bdf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079ddeb2c363c1bbeb7895b876ad20e8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 设全集
,集合
,则韦恩图中阴影部分表示的集合为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c997afeb2e9be9c16822ab852dfafe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d011d7560016bc1b060308aa33c9823.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 若复数
,则
的实部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7682679e731a1a312c51ff035278eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.1 | B.-1 | C.2 | D.-2 |
您最近一年使用:0次
名校
5 . 若复数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139a93ad08a04e1fead501b9a9ebb7e1.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb578edde04fb06407d97e8f2614cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139a93ad08a04e1fead501b9a9ebb7e1.png)
您最近一年使用:0次
解题方法
6 . 已知集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76ca3d93f01cdfacb607c940073e6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 已知函数
是定义在
上的奇函数,当
时
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24acd112e6a6a08c403040a0ec1797f.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b12f2ff24c52fded1dfd0f0b6940a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00cb73f31f15e5f2118b7daaa664d091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24acd112e6a6a08c403040a0ec1797f.png)
您最近一年使用:0次
8 . 已知函数
的定义域为
,则
的定义域为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc7bc07dde43da45e75bb38793257f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03786d34fd54111862eb55df840c11d7.png)
您最近一年使用:0次
9 . 命题“
,
有实数解”的否定形式是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee4eee6c68e48303626cac0982a31615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4870492a8ec87705131e281f2862d8.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
10 . 王安石在《游褒禅山记》中说过一段话:“世之奇伟、瑰怪,非常之观,常在于险远,而人之所罕至焉,故非有志者不能至也”.从数学逻辑角度分析,“有志”是“能至”的( )
A.充分不必要条件 | B.既不充分也不必要条件 |
C.充要条件 | D.必要不充分条件 |
您最近一年使用:0次