1 . 已知向量
满足
,且
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a321112ae2829a4783f7e4a1f022183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8e5f74789e48c0518d340233cc513b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
2 . 已知O是
所在平面内一点,且
,
,
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42083f00cd68320e4e0275400c139551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8533b7d67a3d95340a8462819680367f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98db0299f88f80030e8b01debb45d8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
A. ![]() | B. ![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 设
为平面内的任意两个向量,定义一种向量运算“
”:
对于同一平面内的向量
,给出下列结论:
①
;②
;
③
;④若
是单位向量,则
.
以上所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29264166dd8f7d01fc7450f8fe56a291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b412d3054ea69685032f777669e41e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be40b04c18a099e2a838cdb9090b4cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4eaefbb9be6e5e836644cfbe0301573.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84086ac125c9f1a0504ac37ab0e6dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603ec2875cdda99123a21c7340fad3eb.png)
以上所有正确结论的序号是
您最近一年使用:0次
昨日更新
|
244次组卷
|
4卷引用:模块三 失分陷阱1 新定义问题抓不到定义的本质
(已下线)模块三 失分陷阱1 新定义问题抓不到定义的本质(已下线)【练】专题四 与平面向量有关的新定义问题(压轴大全)北京市丰台区2023-2024学年高一下学期期中考试数学试题(A卷)云南省曲靖市部分学校2023-2024学年高一下学期6月联考数学试题
4 .
中,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe89e08beb475318e0c7d5a87a8712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e4e3219e8964f05b817dbd060c3628.png)
A.54 | B.27 | C.9 | D.![]() |
您最近一年使用:0次
解题方法
5 . 已知圆C:
,直线l:
,若l与圆C交于A,B两点,设坐标原点为O,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca01d1c400707e011745ad16199da13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef6d00ddabcb1bb41fae534f5183ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df09bff72dab3e6555a0597b638a3bd0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 在
中,内角A,B,C的对边分别为a,b,c,且
.
(1)若
,求
的面积;
(2)若
,求使得
恒成立时,实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825b35c991daf511ec70f7521404b1d7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537834c9d6818f78d12d8816ebb547cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72d17c9890b2e80c9b4ba4f5757165e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac2da27db6bfe01fbbefa5acf41ef4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
7 . 如图,动点C在以AB为直径的半圆O上(异于A,B),
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ea4321e821c1e78e311fcd37cf6465.png)
______ ;
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51b89f545616ef48f3706850107ad95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f213621229843639780aae87fa29584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56387ff53874620addcb0b91a605a309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ea4321e821c1e78e311fcd37cf6465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7906b66906ec5943b3bbd9ce9a47e7.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
是单位向量,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f275a75246b5be5cf179f81267d53f1.png)
在
上的投影向量为
,则
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f275a75246b5be5cf179f81267d53f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169143072a2c2a0ea7062d65735de1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a250997f723ab4ccff9d91e0d810fed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7日内更新
|
273次组卷
|
5卷引用:湖北省新高考联考协作体2024届高三下学期2月收心考试数学试题
湖北省新高考联考协作体2024届高三下学期2月收心考试数学试题(已下线)广东省深圳市深圳中学2024届高三二轮四阶测试数学试题(已下线)6.2.4 向量的数量积——课后作业(提升版)江苏省无锡市辅仁高级中学2023-2024学年高一下学期期中考试数学试题江苏省无锡市辅仁高级中学2023-2024学年高二下学期期中考试数学试题
名校
9 . 如图,直线
,点
是
,
之间的一个定点,点
到
,
的距离分别为
和
.点
是直线
上一个动点,过点
作
,点
在线段
上运动(包括端点)且
,若
的面积为
.则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1095c036b49c3327baaa2c3c7f746134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b96dce1ec94eb90c243b2eddb78476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce9a4fe0565a6810452d3fa9c747662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59809f2fa9ce4c833cdf5fe102feb8d8.png)
A.![]() ![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 已知
是边长为1的正三角形,
是
上一点且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f865cb2e4a1c575b331e252a21d7d7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07377d977ef6a8f518b3004564544e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce5d6c8be7019d123c0b1d4ab9e52814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d476da94dcade5f83541f3fca22a1039.png)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
7日内更新
|
1383次组卷
|
4卷引用:浙江省宁波市镇海中学2024届高三下学期适应性测试数学试卷
浙江省宁波市镇海中学2024届高三下学期适应性测试数学试卷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福建省漳州市龙文区2024届高三6月模拟预测数学试题(已下线)【北京专用】高一下学期期末模拟测试B卷