解题方法
1 . 已知
,
为单位向量,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
___________ ,向量
在向量
上的投影向量为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92734ab8cc6c161200fb01053e6ef0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835e02e88155c4f117c86c80783c082d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
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解题方法
2 . 已知
、
分别为
(
)椭圆的左、右焦点,过
的直线与椭圆交于
、
两点,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df499ae1321a0a13ed27900bf6aeb24e.png)
____ ,椭圆的离心率为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e0b859b7b58cee42762156e868e72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b3fe440e1d45de6f1236369c91ac2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df499ae1321a0a13ed27900bf6aeb24e.png)
![](https://img.xkw.com/dksih/QBM/2021/4/30/2711018993164288/2785346789498880/STEM/dffd3927-3950-46fd-98c4-735406f5f549.png?resizew=270)
您最近一年使用:0次
2021-08-13更新
|
905次组卷
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8卷引用:浙江省温州新力量联盟2020-2021学年高二下学期期中联考数学试题
浙江省温州新力量联盟2020-2021学年高二下学期期中联考数学试题山东省枣庄市滕州市第一中学2021-2022学年高二上学期期中数学试题福建省泉州市现代中学2022-2023学年高二上学期期中数学试题湖南省常德市武陵区常德市一中2023-2024学年高二上学期期中数学试题(已下线)第十一章 圆锥曲线专练3—椭圆的离心率1-2022届高三数学一轮复习(已下线)第十一章 圆锥曲线专练2—椭圆小题2-2022届高三数学一轮复习(已下线)2021年新高考浙江数学高考真题变式题11-16题天津市滨海新区实验中学滨海学校2024届高三上学期期中质量调查数学试题
20-21高二下·浙江·期末
3 . 已知
是夹角为
的两个单位向量,
,
,若
,则实数k的值为________ .若
,则实数k的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6ff42d15c7bf8176ba02bab0ab00cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44917f942c3fd36614f58d47b5fe1821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30395f00bbe8b441087fd705b44fb15f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27107b4c917273d3168235dc10ecdae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ab55ce496dc3dfdf3f0c459ccf49cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac408a5d33731ec9026a0a0e21d071f.png)
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4 . 已知
是边长为2的正三角形,
是线段
(包括端点)上的一个动点,则
的值是___________ ;
的最小值是_______ .
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f43248ee9e11da124aefabf4b9d6e7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7e127917d9a27fe6c26b04970fba80.png)
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5 . 已知平面向量
,
,
,满足
,
,
,
.若
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3700dbd77c373eb91878b3d2b163b702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3ede869e508a8c8bda34a16782f863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3607d45288d530f34f75972583943ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47d94dfc3e49cac8a73d1d37bf5f589.png)
您最近一年使用:0次
2021-08-07更新
|
442次组卷
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9卷引用:浙江省舟山市2020-2021学年高二下学期期末数学试题
浙江省舟山市2020-2021学年高二下学期期末数学试题上海市进才中学2018-2019学年高二下学期3月月考数学试题上海市进才中学2019-2020学年高二上学期期中数学试题2019年上海市青浦区高三上学期期末学业质量调研(一模)数学试题2020届湖南省长沙市明达中学高三(高复部)第二次模拟考试理科数学试题(已下线)专题07 平面向量-2020年高三数学(理)3-4月模拟试题汇编(已下线)考向12 平面向量的概念及线性运算-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)课时26 向量的坐标表示及其运算-2022年高考数学一轮复习小题多维练(上海专用)上海海洋大学附属大团高级中学2023届高三上学期一模数学试题
解题方法
6 . 已知
,
为单位向量,且
.若向量
满足
,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7677fa4ecba4dd4005f5a1b52cf86b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa776d92ba05a8f8f68bcd622b01106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1014b8bd77dab8fdf533297a0c29b4b.png)
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7 . 在△ABC中,AB=3,AC=4,BC边的中垂线分别交BC、AC于D、E,点P是DE的中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90cbaa64bb80c9589256d6c637cc77d8.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90cbaa64bb80c9589256d6c637cc77d8.png)
您最近一年使用:0次
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解题方法
8 . 已知
是同一平面内的三个向量,其中
是互相垂直的单位向量,且
,则
的最大值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5825ba8a4dd5647b345567f3b9e50cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83634e314df24df73ae37d25a44d20e3.png)
您最近一年使用:0次
2016-12-04更新
|
683次组卷
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6卷引用:浙江省台州市书生中学2018-2019学年高二上学期起始考试数学试题