解题方法
1 . 已知单位向量
满足
,则
在
方向上的投影向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c749bf931067fe018d6c0cd1f1d17c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
,
,
,则
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68f1205a3d4a24810d0fe9c913583a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76e9af6e45d843d4e5f8c8d564105d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5245385fe5ec570e6fcfcdfb9e922a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 某市人民医院急诊科有
名男医生和
名女医生,内科有
名男医生和
名女医生,现从该医院急诊科和内科各选派
名男医生和
名女医生组成
人组,参加省人民医院组织的交流会,则所有不同的选派方案有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 一组数据按从小到大的顺序排列为1,3,4,x,7,9,若该组数据的中位数与平均数相等,则数据x是( )
A.4 | B.5 | C.6 | D.7 |
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解题方法
5 . 定义
表示不超过
的最大整数.例如:
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f161c2a3717f1b6c62d0d7dae0b606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723bbeaf377a92b5ad24e480bfb69a5b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 已知复数
满足
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a491320664d2f5bab356117541b83347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b294e4fbf4ac4b994cf5ea67a1c698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061b878f4e056cf5be4ae842694e2f07.png)
A.1 | B.![]() | C.![]() | D.![]() |
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昨日更新
|
221次组卷
|
2卷引用:山东师范大学附属中学2024届高三下学期考前适应性测试数学试题
解题方法
7 . 已知函数
的导函数为
,且
,当
时,
,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9cf6a1d3c32ddd6625e74dff2158d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75808bf2105bb703c07944466420f298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/409c1f6b206fbe506a4d6027fc87fd31.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 已知数列
是各项均为正数的等比数列,且
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aba1e3cce2f76ffd9c8a37d6ee45ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df13bd885984c81c130f73caee9827fe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
9 . 已知向量
,
,则“
”是“
和
的夹角是锐角”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3c8f3a0ebe2ba858d21357c9ec3217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22541e15379c71d6293b38ee1118fd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a31acb92a54dc541176a3eb03c32697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分又不必要条件 |
您最近一年使用:0次
7日内更新
|
428次组卷
|
2卷引用:2024届山东省五莲县第一中学高三模拟预测数学试题
解题方法
10 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656f9b8f27f9c0f4d997d842426b358d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf2a719ccbf51bd5849d5313e569f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次