1 . 已知向量
,
,
满足
,
,
,向量
与向量
的夹角为
,则
的最大值为______ .
![](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/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d5b0d278a7457a0c548278c60ab695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df567ff8004f59c192135634e604f4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d053e8348d8ef25177b2a6ddd521b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015804533449e04f3e4f9f2d54326f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222fd0837d18068c2471dac135e79f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db5a2ab264a81849751fcf19e02ea16.png)
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2 . 已知
为
的重心,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1d6ee7b2e012c660eb9e6206db274f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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2021-08-12更新
|
910次组卷
|
7卷引用:河北省邯郸市九校联盟2020-2021学年高一下学期期中数学试题
名校
解题方法
3 . 已知
,
,
是平面向量,
是单位向量.若非零向量
与
的夹角为
,向量
满足
,则
的最小值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99265b8b6459385e1eba69869b9d061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99265b8b6459385e1eba69869b9d061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99265b8b6459385e1eba69869b9d061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a1bf8f39bed222f52bbc15af382235e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c2a83fad3941e98cdf0bed4f64ee4b.png)
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4 . 空间四边形
中,
分别是
边的中点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b8db4916bfede56f465feb43ca1062.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab0ed07775b0fdcb368b696a0f65422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b589ca985b32e60ea2e39fe58d4ac9d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1bd90e3b8a1d6beed551657de5b346d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b8db4916bfede56f465feb43ca1062.png)
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5 . 已知
是平面中的三个单位向量,且
,则
的最小值是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96022a881e03e32d3483d997c3f170c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7677fa4ecba4dd4005f5a1b52cf86b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fd3827589ff3895f2f4b28a8f37400.png)
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6 . 已知平面向量
,若
,且
.若向量
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ab21cf4f8f8ffa5dafd65eeb72c99a.png)
___________ ;若向量
满足
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13eeee5c7f137d67d1c483e3adba98c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2cc1f1ef9ad32eef62aefa4c3fc3d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b887040e1fd0fccd4f15fed75ca4d48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa6d0d5c9de0429fb12ba83b5918ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ab21cf4f8f8ffa5dafd65eeb72c99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337ab4dc61186ca58bb0605cb6d02df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5fb1689c81b67e85145f646bbefda5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a898cb085d7dd2c250481688acd0dc.png)
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7 . 如图,菱形ABCD的边长为2,∠A=60°,M为DC的中点,P是以A为圆心2为半径的圆弧BD上的点,则
的范围为_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dbfa0a2ce11d14cbba4a5d4fe6d17e4.png)
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8 . 如图,在梯形
中,已知
,
,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a8a071a58168a13919329f1466b597.png)
________ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280eab531a8c06d1638eec118cca7be3.png)
________
,梯形
的周长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32513c66bca1e2d1706d50a6615df1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/886b31da10e56e30fb36d26a726e11d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a8a071a58168a13919329f1466b597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280eab531a8c06d1638eec118cca7be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f90e16e18b1e88ebb1ab811d06be76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2021/6/4/2735479533092864/2768851387817984/STEM/478967af12344fe9a6ef477111cb0237.png?resizew=131)
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20-21高一下·广东深圳·期中
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解题方法
9 . 如图,边长为
的正三角形
的边
落在直线l上,
中点与定点
重合,顶点
与定点
重合.将正三角形
沿直线l顺时针滚动,即先以顶点
为旋转中心顺时针旋转,当顶点
落在l上,再以顶点
为旋转中心顺时针旋转,如此继续.当
滚动到
时,顶点
运动轨迹的长度为___________ ;在滚动过程中,
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07452f7f2cb926d8209ea0d06a38267.png)
![](https://img.xkw.com/dksih/QBM/2021/5/17/2722990641930240/2763221345017856/STEM/9d1d00b641f14feda79a5c99316a855e.png?resizew=389)
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10 . 在
中,
,
,
,
为线段
上一点,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.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/8a2f486183455879377055ae25a3eca9.png)
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2021-07-13更新
|
684次组卷
|
6卷引用:江苏省四校(上冈高级中学等)2020-2021学年高一下学期期中联考数学试题
江苏省四校(上冈高级中学等)2020-2021学年高一下学期期中联考数学试题安徽省六安市第二中学2022届高三上学期第三次月考数学试题湖北省十堰市丹江口市第一中学2021-2022学年高一下学期期中数学试题(二)广东省清远市博爱学校2021-2022学年高一下学期第一次教学质量检测数学试题广西南宁市宾阳县宾阳中学2021-2022学年高一3月月考数学试题(已下线)6.3.2 平面向量的正交分解及坐标表示+6.3.3平面向量加、减运算的坐标表示+ 6.3.4平面向量数乘运算的坐标表示 (精讲)(1)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)