名校
解题方法
1 . 已知随机变量
服从正态分布
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c80d5867733b7195332bf418af149f.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778dfb406e5ca6131f7e39a1cdf145c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/240cd0bff92f90feb47184e0b5ed7df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c80d5867733b7195332bf418af149f.png)
您最近一年使用:0次
昨日更新
|
92次组卷
|
2卷引用:上海市位育中学2023-2024学年高二下学期期末考试数学试卷
2 . 计算
的结果是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2873707933f0c596bf1a3678373b5a1b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
昨日更新
|
88次组卷
|
2卷引用:江苏省盐城市东台市第一中学2023-2024学年高一下学期期中考试数学试题
解题方法
3 . 已知
,
,
和
的夹角是60°,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cd160e94583cfa2ea76af680966f75.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee2c2c4b37645e9456eb6f8e45dc868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd09c939bec644680e8587e8accfd905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d806f27eecf5aee1e75bf35acbcd4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964c64c610af9274ab57b28edc2f3c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cd160e94583cfa2ea76af680966f75.png)
您最近一年使用:0次
4 . 在
中,内角A,B,C所对的边分别为a,b,c,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598e2fa81da50344433e510fab75ad56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
解题方法
5 . 向量
与
不共线,
,
(
),若
与
共线,则
应满足( )
![](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/42ac56c50229b941ed1ac7c653a3687c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ebf3930a3a995c05a833765866272a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c2709edf306025d40299aaf455aec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3e9eb0c4bd9c899886668229c4c947.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 已知向量
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3a965d00b6b859d47ef7a35d94e39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137b7aab11fe594db29771aee9280a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a31fbb1eaa5fdaa9fd734d62faabeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
解题方法
7 . 设向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb11592a8871819f9045d311d420342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12b22a1ed003a21a35e379d9c815745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668f0254cf71230731ceb71bfc0e07a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.0 | C.6 | D.![]() |
您最近一年使用:0次
8 . 复数
的共轭复数是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e43145e8b838e2214d3b235f97faf75.png)
您最近一年使用:0次
9 .
的值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be7a50080b8c50ad36475ff172f0e7d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 若
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccb287e98a6a68b553969da381858fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次