名校
1 . 如图,在菱形
中,
,
.
,求
的值;
(2)若
,
,求
.
(3)若菱形
的边长为6,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d41769e5b0593292ded612c401572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f93eb8467ec408b7def036a40283004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6c052cd7a79455c3df58e1273ec574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ef5ee7f82e149ca734fc1548b03450.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb6b1ebe46e82f8b2404a2a9a85a953.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7700cb2566526a121b5dcd25b8d9f10e.png)
(3)若菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3c21714a4b06449a38249c86f8cd1c.png)
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2024-04-19更新
|
598次组卷
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15卷引用:江苏省南通市启东中学2020-2021学年高一下学期第一次阶段测试数学试题
江苏省南通市启东中学2020-2021学年高一下学期第一次阶段测试数学试题(已下线)期末测试一(A卷基础卷)- 2020-2021学年高一数学必修第二册同步单元AB卷(新教材苏教版)江苏省扬州市高邮市临泽中学2020-2021学年高一下学期期中模拟数学试题江苏省无锡市天一中学2020-2021学年高一(强化班)下学期期中数学试题江苏省无锡市天一中学2020-2021学年高一下学期期中数学试题江苏省南京师范大学附属中学江宁分校2020-2021学年高一下学期第二次月考数学试题江苏省苏州市吴江汾湖高级中学2020-2021学年高一下学期5月阶段性检测数学试题江苏省镇江第一中学2021-2022学年高一下学期期中数学试题(已下线)模块三 专题4 大题分类练(平面向量)拔高能力练(苏教版)江苏省宿迁市洋河如东中学2023-2024学年高一下学期学情调研一数学试题湖北省随州市第一中学2020-2021学年高一下学期期中数学试题(已下线)第8章 平面向量【真题训练】-2020-2021学年新教材高一数学下册单元复习一遍过(沪教版2020必修第二册)苏教版(2019) 必修第二册 过关斩将 第9章 9.3.1 平面向量基本定理陕西省商洛市镇安县第二中学2020-2021学年高一下学期期中数学试题广东省汕头市潮阳一中明光学校2023-2024学年高一下学期5月月考数学试题
名校
解题方法
2 . 我们把由平面内夹角成
的两条数轴
,
构成的坐标系,称为“@未来坐标系”,如图所示,
分别为
正方向上的单位向量,若向量
,则把实数对
叫做向量
的“@未来坐标”,记
,已知
,
分别为向量
,
的“@未来坐标”,若向量
,
的“@未来坐标”分别为
,
,则向量
,
的夹角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14069d21d32c724f0ebe3e311f114c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c092d69df76faf1e2133dc96b466ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce97db4dff9df73f5536426da4e2ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b55c8fcba2ff089e23ca9689a44a31a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f6cd7b3afcf3c24a21e16d52d7a37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad27a658ff12026c9d24d67f5f32a47.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/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec3e60d60770fea1abb19b12a45913c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30511e6903e1c1f9a8fedbcf916ca5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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名校
解题方法
3 . 若平面向量
两两夹角相等,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3656e0d91f1ffb1634c145b406b5d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18adcd988d80833c5d730bdc2529e21.png)
A.2 | B.5 | C.2或5 | D.![]() ![]() |
您最近一年使用:0次
2024-04-18更新
|
544次组卷
|
4卷引用:江苏省江阴长泾中学2023-2024学年高一下学期3月份阶段性检测数学试题
江苏省江阴长泾中学2023-2024学年高一下学期3月份阶段性检测数学试题四川省达州市万源中学2023-2024学年高一下学期4月期中考试数学试题(已下线)模块四 专题6 重组综合练(四川)(北师版高一期中)(已下线)专题03 向量的数量积-期末考点大串讲(人教B版2019必修第三册)
4 . 下列四个命题,其中说法错误的是( )
A.点![]() ![]() ![]() ![]() |
B.非零向量![]() ![]() ![]() ![]() ![]() ![]() |
C.已知平面向量![]() ![]() ![]() ![]() ![]() |
D.函数 ![]() ![]() |
您最近一年使用:0次
名校
5 . 已知函数
.
(1)若
,求
的取值范围;
(2)设
为实数,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef426c088393d07d89138a55f3a7e482.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c799fbfe81bf04e30e1c493a3fa5aaad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34870529f653425b3d33ffd8bd5dc72.png)
您最近一年使用:0次
2024-04-18更新
|
868次组卷
|
2卷引用:江苏省南京师范大学附属中学2023-2024学年高一下学期4月期中考试数学试题
名校
解题方法
6 . 某公司欲生产一款迎春工艺品回馈消费者,工艺品的平面设计如图所示,该工艺品由直角
和以
为直径的半圆拼接而成,点P为半圈上一点(异于
),点H在线段
上,且满足
.已知
,设
.
,且
达到最大,当
为何值时,工艺礼品达到最佳观赏效果;
(2)为了工艺礼品达到最佳稳定性便于收藏,需满足
,且
达到最大.当
为何值时,
取得最大值,并求该最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d55963a9b9b02737110f57a377b41cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6124f1ec7a688be570f72731c7e4089c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01dcbd171693a47c5b932a5e84de10c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be6305b713105398b037cfa0c42a7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98fc4fee62a7d652f71993bdf3de4c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)为了工艺礼品达到最佳稳定性便于收藏,需满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c63b233cb3fe1c34755fc940468a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0561532c1746d8badfc2aee2623c08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0561532c1746d8badfc2aee2623c08d.png)
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2024-04-17更新
|
227次组卷
|
2卷引用:江苏省苏州吴江高级中学2023-2024学年高一下学期3月月考数学试题
名校
7 . 如图,在平行四边形
中,
,令
.
表示
;
(2)若
,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896c8d8287880eaa8f3aff23329162c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ba495e8f9fe02229a4248fdbfb4710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1dc65288cdb24193f6f9f67bf9ea34.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7142f234e03e366ef1081926f1db179c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7ab7eff367cad55eb86828315087e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ab2d6e60a34995854f99da4ccfb0a4.png)
您最近一年使用:0次
2024-04-17更新
|
665次组卷
|
2卷引用:江苏省苏州吴江中学2023-2024学年高一下学期3月月考数学试题
名校
8 . 下列等式正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
9 . 已知向量
,
的夹角为
,且
,
,
(其中
).当
取最小值时,
与
的夹角的大小为( )
![](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/fd4c5016bd1fc6582078299b9cf8b392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0ae443a505d263c44a3d7515fd0170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fa8ea29001bb1f0c1e5157aff2fca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a5ca018c1e9eda26c4ac0258231990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83634e314df24df73ae37d25a44d20e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
10 . 已知向量
,
,函数
,若
,
恒成立,则实数a的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182692fc552dc378439df8bc0aa4d631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39dec46cbdbb32850be169c8ab3b329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7aa1233d7a93113281594c41f25c7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25c93086b7da749598d9fbce951e8fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c8abdaf1a883ca6d2fed14f8341696.png)
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2卷引用:江苏省如皋中学2023-2024学年高一下学期教学质量调研(一)数学试题