名校
解题方法
1 . 已知平面向量
均为单位向量,且
,若
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87f0ca6032f85abf58764ccaafd40bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af70c2a213ed4632100dc5c3fb07bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83634e314df24df73ae37d25a44d20e3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
2 . 已知复数
,
(
为虚数单位)在复平面上对应的点分别为
,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95423c449f5d44dd949bf3b0130946f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6cef94c1bce90f6573fd0315db6b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38033198bf936b904a8c74db67e4cdcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5927f1967a8f72e8fb887edb5023a921.png)
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解题方法
3 . 已知向量
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9ac82f6a86d9a959f76d13c8fda944.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb371bd7728c6d6a16533a93924ad998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3eef0862361972bcaeac7389416141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9ac82f6a86d9a959f76d13c8fda944.png)
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4 . 已知平面向量
,
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c067e4548a847026cd22a6af11b25a7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0979ead3a09ede4835e7fe77c87850f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d22a0d50465d1d420537ce001e0062f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在
中,角A,
,
对应的边分别为
,
,
,
.
(1)求角A;
(2)法国著名数学家奥古斯丁
路易斯
柯西(AugustinLouisCauchy,1789年-1857年)在数学领域有非常高的造诣.很多数学的定理和公式都以他的名字来命名,如柯西不等式、柯西积分公式.其中柯西不等式在解决不等式证明的有关问题中有着广泛的应用.
①柯西不等式的二维形式是对于任意的
,
,
,
,有
.请证明上述不等式,并写出等号取到的条件;
②请用柯西不等式的二维形式求
的最大值,并写出等号取到的条件;
③在(1)的条件下,若
,
是
内一点,过
作
,
,
垂线,垂足分别为
,
,
,借助于三维分式型柯西不等式:
,
,
,
当且仅当
时等号成立.求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cc48b9017b4828713efe931111e782.png)
(1)求角A;
(2)法国著名数学家奥古斯丁
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97ec04a1aa7ac6fce72d589864940a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97ec04a1aa7ac6fce72d589864940a2.png)
①柯西不等式的二维形式是对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a876ecb804eb0553c246e5fcc40b708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2491417bf91398e74a0680b031cabb6e.png)
②请用柯西不等式的二维形式求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1034d80cc1e3c3edfbaf43a944b8a.png)
③在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13648bbc28fe0c92b9467dd10a3c6af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c1254b9aeec2bbd01d0eecca66d708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5ba135022def1bcc1cddea66496706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebbd1d0e4d44a11d9b0d65e73eef212.png)
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6 . 已知
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498e31243c96cee074159c14530ce929.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2eddd1067f72310406b09f19404f478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1c98c1d7820c49dff57282e1fbd554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91380b1b3ab45c1bbde349352ecd404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498e31243c96cee074159c14530ce929.png)
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2024-03-31更新
|
223次组卷
|
3卷引用:重庆市育才中学校2023-2024学年高一下学期3月月考数学试题
重庆市育才中学校2023-2024学年高一下学期3月月考数学试题重庆市渝高中学&城口中学2023-2024学年高一下学期第二次联合质量监测数学试题(已下线)第二章平面向量及其应用章末十六种常考题型归类(2)-【帮课堂】(北师大版2019必修第二册)
解题方法
7 . 已知向量,
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad52cc8dadc46aa45143c633fadaed20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afae9db82464afb37d387f6cbedc8139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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8 . 已知向量
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947b2b07990906c091915ac761984447.png)
(1)若向量
与
垂直,求
与
夹角的余弦值;
(2)若
,且
与
共线,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0812ea92afd60233426521798f5ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442646776e9166c64d3e4b30f898fba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947b2b07990906c091915ac761984447.png)
(1)若向量
![](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/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383984a28388825c3e0d6b98decacc98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948e5dbc7f5f18e3a44113313b0ca634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b6cec7793213b53744d10151f9cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2024-03-24更新
|
758次组卷
|
3卷引用:重庆市西南大学附属中学校2023-2024学年高一下学期定时检测(一)(3月月考)数学试题
名校
解题方法
9 . 如图,正方形
的中心与圆
的圆心重合,
是圆
上的动点,则下列叙述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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2023-10-24更新
|
533次组卷
|
4卷引用:重庆市部分学校2023-2024学年高一下学期第一次月考数学试卷
重庆市部分学校2023-2024学年高一下学期第一次月考数学试卷(已下线)第一次月考卷02-《重难点题型·高分突破》(人教A版2019必修第二册)浙江省绍兴市诸暨中学暨阳分校2023-2024学年高一下学期4月月考数学试题河南省郑州市第四十七高级中学2023-2024学年高二上学期开学考试数学试题
名校
解题方法
10 . 等边
的边长为3,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1a106e4f1a3d3f9efddb4dc4c63664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cba586718d19d3f0da079c51c40e1b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08456ba9305cefd19456651b4ae56955.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-08更新
|
1116次组卷
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8卷引用:重庆市育才中学校2023-2024学年高一下学期3月月考数学试题
重庆市育才中学校2023-2024学年高一下学期3月月考数学试题(已下线)8.1.3 向量数量积的坐标运算-【帮课堂】(人教B版2019必修第三册)2024届广东省华南师范大学附属中学高三综合测试(三)数学试题浙江省嘉兴市平湖市2023届高三下学期3月模拟数学试题福建省南平市浦城县2022-2023学年高一下学期3月月考数学试题(已下线)第二节 平面向量基本定理及坐标表示 核心考点集训新疆维吾尔自治区乌鲁木齐市高级中学2024届高三上学期12月月考数学试题浙江省台州市椒江区书生中学2022-2023学年高一下学期3月月考数学模拟试题