1 . 已知
、
是两个不平行的向量,
,
,
,试判断
、
、
的位置关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f0b06af0f6306300e8e76668853f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/847f4761e76bc3835540c5000c95156f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8ce32491e2691b4011a8799aa8126c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dff42a9f8fd4e32397df604634aeab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a31ed4d0f30e28ca1b03d8162d8de70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
2019-11-10更新
|
142次组卷
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3卷引用:沪教版 高二年级第一学期 领航者 第八章 8.3平面向量的分解定理
2 . 已知
,
,当
取最小值时,
(1)求
的值;
(2)若
、
共线且同向,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c91b1ce14aaf7c0ae2db2bdfcebc85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518f80f1c38339abad92700628070aeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7196d986cd8da2fceff77e0c13931b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7b179fb13c1c482029f7032c7ed7da.png)
您最近一年使用:0次
名校
3 . 如图,在
中,
,点E,F分别是
,
的中点.设
,
.
表
,
.
(2)如果
,
,
,
有什么关系?用向量方法证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1c68c71dedc4f7767be51893e60924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1887a1513aee097a396e99d7399c4e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4851948ee018b0cf4e52b04f738f3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fa2fcefaf3d8868da0cb52877c5247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbba7bff7720b3aa33f29936ede7819e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a449b69791ba25c6eed7d71fe508fdb.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cdf6426f0eaa95c31648895d35fe165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846071242f981289741ad19f4e7190cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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2020-02-02更新
|
1042次组卷
|
6卷引用:山东省泰安第三中学2023-2024学年高二上学期开学考试数学试题
山东省泰安第三中学2023-2024学年高二上学期开学考试数学试题人教A版(2019) 必修第二册 逆袭之路 第六章 6.3.1 平面向量基本定理(已下线)6.3.1 平面向量基本定理(已下线)6.3 平面向量基本定理及坐标表示北京市第八十中学2022-2023学年高一下学期期中考试数学试题人教A版(2019)必修第二册课本习题6.3.1 平面向量基本定理
名校
4 . 在平面直角坐标系xOy中,已知点A的坐标为
,点B的坐标为
,动点
满足
.
(1)若P在线段AB上,求P的坐标.
(2)证明P总落在一个定圆上,并给出该定圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1442b309b19f564d4de7474b850343e6.png)
(1)若P在线段AB上,求P的坐标.
(2)证明P总落在一个定圆上,并给出该定圆的方程.
您最近一年使用:0次
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5 . 已知三角形
中,点
在线段
上,且
,延长
到
,使
.设
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/260d8eb3-f916-4350-a927-10006960bf17.png?resizew=119)
(1)用
表示向量
,
;
(2)设向量
,求证:
,并求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67bd635fe0ba6eb7960bf838c6fdf607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8eb792421232db18dc02415163ffe30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac5f94e56c4679a32df00c5bb57964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63666d7cc3b50ada407f904098e163c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/260d8eb3-f916-4350-a927-10006960bf17.png?resizew=119)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d194ecefc9101001d88d3cc0bc9d6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4407c0b2e5febf70f610bd00067f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a584f11ff7ac3cfd1014f20187b196.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba5f395b3f033f16227e4013c17a37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f9ef5c78ded1706957e5f4fca48228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc25d51c537b8b0408a98e4be3711ee1.png)
您最近一年使用:0次
2020-02-18更新
|
723次组卷
|
4卷引用:2020年秋季高二数学开学摸底考试卷(新教材人教A版)03
(已下线)2020年秋季高二数学开学摸底考试卷(新教材人教A版)03山东省济南市第一中学2018-2019学年高一下学期期中数学试题第9章 平面向量 (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)(已下线)专题02 平面向量的加减法-《重难点题型·高分突破》
6 . 在直角坐标系中已知A(4,O)、B(0,2)、C(-1,0)、D(0,-2),点E在线段AB(不含端点)上,点F在线段CD上,E、O、F三点共线.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/341564c1-e2dd-4784-a793-2d0a1d9df2be.png?resizew=220)
(1)若F为线段CD的中点,证明:
;
(2)“若F为线段CD的中点,则
”的逆命题是否成立?说明理由;
(3)设
,求
的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/341564c1-e2dd-4784-a793-2d0a1d9df2be.png?resizew=220)
(1)若F为线段CD的中点,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c911f7a8e6d0eba8177f1d54374cc70.png)
(2)“若F为线段CD的中点,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c911f7a8e6d0eba8177f1d54374cc70.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0725580f77cc68ce5c14514dd5e4d69b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adebff9fb726cd58eda1ef994890901.png)
您最近一年使用:0次
名校
7 . 已知点
.
(1)求证:当
时,不论
为何值时,
三点共线;
(2)若点
在第三或第四象限,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd625a70dc647b1e917d60a8e9e5fcb.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7506cd409fc15693d2fa0f69fcc0464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd84a8f95166367063218ee03ffd5a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ee1e189c3c9991410d2f8b43c28a036.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deba4dfe799cce200a4c448018cd4e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd84a8f95166367063218ee03ffd5a7.png)
您最近一年使用:0次
8 . 如图所示,已知四棱锥
的底面是直角梯形,
,
,侧面
底面
.证明:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/ce69d77b-36e2-4345-b950-78c929bc7ac8.png?resizew=185)
(1)
;
(2)平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc7f759828fe6a2e65e7c43070237f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571f3744972d4043b8bb6991030840e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e8042f7546de257975e2e5b4b3f401b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/ce69d77b-36e2-4345-b950-78c929bc7ac8.png?resizew=185)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b07e317ffe7859e81b42ef4970e344a.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2019-12-07更新
|
209次组卷
|
4卷引用:1.4.1 空间向量的应用(一)(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教版A版)
(已下线)1.4.1 空间向量的应用(一)(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教版A版)(已下线)专题8.6 空间向量及空间位置关系(练)【理】-《2020年高考一轮复习讲练测》(已下线)测试卷14 空间向量-2021届高考数学一轮复习(文理通用)单元过关测试卷(已下线)考点40 立体几何中的向量方法-证明平行与垂直关系(考点专练)-备战2021年新高考数学一轮复习考点微专题
9 . 设
,
,
是
中
,
,
所对的三条边,用向量的方向法证明余弦定理:
.
![](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/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df9859c4c4d6b0bca219fe7a2954b8e.png)
您最近一年使用:0次
2019-11-11更新
|
122次组卷
|
3卷引用:沪教版 高二年级第一学期 领航者 第八章 8.4向量的应用
名校
10 . 已知抛物线
与直线
相交于A,B两点,O为坐标原点.
(1)求证:
;
(2)当
时,求
的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4872a20fc392c0e368aa3bfe3d8037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46de5f5993e7dcd0e828081045e502af.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2019-11-21更新
|
547次组卷
|
3卷引用:宁夏回族自治区银川市兴庆区宁一中2019-2020学年高二上学期期中数学(文)试题