名校
解题方法
1 . 已知平面向量
,
不共线,
,
,若A,B,C三点共线,则实数
等于( )
![](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/384b2ccf546307ca196445a9a58be81c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48834ec58187059ec73b8606f6c8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 在
中,角A,B,C所对的边分别为a,b,c,已知
,
,
.
(1)求角B;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6718cad8e8551ac8c8440f0508bbda88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0975a7eb5d14c04a6891f22ee2a9c784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb5138a03b19266f82223899a614f7.png)
(1)求角B;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45f7d003126610b4de063158811ddba.png)
您最近一年使用:0次
名校
3 . 已知平面向量
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67142c672f4ce0b994c1d7d444a2b47.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f29ea1d6fd62eef9100aec3b839beea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0108aa2fb2fad508ff6fcba4814db9a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67142c672f4ce0b994c1d7d444a2b47.png)
您最近一年使用:0次
名校
解题方法
4 . 在平面直角坐标系xOy中,向量
,
,其中
.
(1)判断向量
,
是否垂直?
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0fc0e69a986bc200d384a86eaf601d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d753db2f3a81e3fc65d7d97043f9a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a135466eb8ca64d002d0fad36176d1c1.png)
(1)判断向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76f737b7b8798976327dbbdb662bcb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb70bb0fca51c6da3eca82140e7490f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2024-05-01更新
|
357次组卷
|
2卷引用:云南省保山市腾冲市第八中学2023-2024学年高一下学期4月期中考试数学试题
5 . 在
中,
,点D满足
,其中
,则当
取最小值时,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15eab039c230b169be4788cf931db47b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9b1c40275086c9ed8aac09a6dc765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3999cdc37dd36b630ccfd72bd36e9f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5261044963385782a53ffdd79710b5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d9249024c46933ea18ef3a032975c00.png)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
解题方法
6 . 已知点
,则与向量
方向相反的单位向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd8a7a88dadb74cafb6d36e669f57c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-08-28更新
|
692次组卷
|
2卷引用:云南省保山市腾冲市2022-2023学年高一下学期期中教育教学质量监测数学试题
7 . 下列说法正确的是( )
A.已知向量![]() ![]() ![]() ![]() |
B.已知向量![]() ![]() ![]() ![]() ![]() |
C.已知向量![]() ![]() |
D.已知线段![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
8 . 已知向量
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dcd5cf9f9b352e3b5de783ba6ec5cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7796cec50ed668e457ae5398295533af.png)
A.充分而不必要条件 | B.必要而不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2023-08-22更新
|
315次组卷
|
4卷引用:云南省保山市腾冲市2022-2023学年高一下学期期中教育教学质量监测数学试题
云南省保山市腾冲市2022-2023学年高一下学期期中教育教学质量监测数学试题四川省绵阳市三台县三台中学校2023-2024学年高三上学期9月月考文科数学试题四川省凉山州宁南中学2023-2024学年高二上学期第一次月考数学试题(已下线)6.3.5 平面向量数量积的坐标表示-同步题型分类归纳讲与练(人教A版2019必修第二册)
9 . 已知向量
,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf96063b6dfe36286ae248844b74b99.png)
(1)求函数
的单调递增区间;
(2)已知
分别为
内角
的对边,其中A为锐角,
,且
,求
的面积S.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1010490a46eb41856fadcdde095f0a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf96063b6dfe36286ae248844b74b99.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68dd79ec94174a74552dcca43ff85140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0d5cf8c22d0cf93274939d92963665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解题方法
10 . 我国著名数学家华罗庚曾说过:“数缺形时少直观,形少数时难入微,数形结合百般好,隔离分家万事休”. 数学中,数和形是两个最主要的研究对象,它们之间有着十分密切的联系,在一定条件下,数和形之间可以相互转化,相互渗透. 而向量正是数与形“沟通的桥梁”. 如图,在
中,
,若
为
中点,
与
交于点
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee284488e3112e1b450a8be8af85319.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e40f20f61d6b56cfcc484fc39c38cb35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6d728b430549f00bb9c0a7bf8bf7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377962502ccf0435ed3bc89ec4fe594d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c9d4bae362216d12bb5bb9c0e2326b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee284488e3112e1b450a8be8af85319.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/24/40e7172e-3f55-4566-a256-ffcb317ea36b.png?resizew=169)
您最近一年使用:0次