解题方法
1 . 在
中,D是BC的中点,E是AD的中点.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636af1c1db008460ce102ccdfc5bd7b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808382ba1d893826a026d85e0cd67609.png)
A.![]() | B.![]() | C.-1 | D.1 |
您最近一年使用:0次
2 . 已知
,
,
,
四点不共线,下列等式能判断
为平行四边形的是( )
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2023-07-30更新
|
381次组卷
|
7卷引用:内蒙古自治区包头市2022-2023学年高一下学期期末数学试题
内蒙古自治区包头市2022-2023学年高一下学期期末数学试题(已下线)专题02 向量的加减法-【寒假自学课】(苏教版2019)(已下线)6.2.2 向量的减法运算【第二练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)6.2.2 向量的减法运算-高一数学同步精品课堂(人教A版2019必修第二册)(已下线)第03讲 6.2.2向量的减法运算-【帮课堂】(人教A版2019必修第二册)(已下线)6.2.2 向量的减法运算(分层作业)-【上好课】(已下线)6.2.2?向量的减法运算——课后作业(提升版)
3 . 设向量
,.
(1)求证:
与
互相垂直;
(2)设
,若
与
垂直,求实数
的值;
(3)设
,当
取最小值时
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda8fffbec8bbb7e7ed35ebac0e305fb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3143307ad0ba4a631eac04e814993655.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd9cf6452dfab1685efa81d08a3dd97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1520923edfa8df389811af06b1bdfa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968f96559fc6ff0459d6af4992e1bbf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad3a4a780058a662e53094557b28f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a2a34b4317deffa40ba34e269c2b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd927b4b5a7875528c1b54aa4bb8b2dd.png)
您最近一年使用:0次
解题方法
4 . 已知
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa105184c5addd7122bf0813c2e6c2bd.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8edfd235ca2bc1420911415305dd396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcbe8b4bcd32e5a64ebfd873f8cbb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa105184c5addd7122bf0813c2e6c2bd.png)
您最近一年使用:0次
解题方法
5 . 已知
,且
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca8f77412df80e314ee1e5efd6a4b52f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7eed9122af80ea3783184358a03030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 已知
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca8f77412df80e314ee1e5efd6a4b52f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7eed9122af80ea3783184358a03030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-04-21更新
|
1041次组卷
|
3卷引用:内蒙古包头市2023届高三二模理科数学试题
名校
解题方法
7 . 已知
,
,
与
的夹角为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69fc626501dba12676d69bb2ecdc419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2396cac4b185cf1f1a67dad9248481c.png)
![](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/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df020d1001a470b0123338719aa243d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
您最近一年使用:0次
2023-04-21更新
|
680次组卷
|
4卷引用:内蒙古包头市2023届高三二模理科数学试题
解题方法
8 . 若函数
在
的大致图象如下图,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/a0fdf510-98a1-4046-9708-dc4cbb66432b.png?resizew=237)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3c4a7b98281b6f130258b9568fed9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15bc7483042a6ffa5d945881df3a6984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d514174b3d31834dd436ba2bd1d8d1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/a0fdf510-98a1-4046-9708-dc4cbb66432b.png?resizew=237)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
2023-04-21更新
|
628次组卷
|
5卷引用:内蒙古包头市2023届高三二模文科数学试题
内蒙古包头市2023届高三二模文科数学试题内蒙古包头市2023届高三二模理科数学试题内蒙古自治区乌兰察布市2023届高三二模理科数学试题(已下线)专题05三角函数与解三角形(选填)(已下线)专题05三角函数与解三角形(选填)
名校
解题方法
9 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8ca314e2abc8afb1527bc53cf5e7aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c7be58589d5d7a0f45bc6bbe61d1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a9d11c1fdda8f3bb2ef921bc75f816.png)
A.![]() | B.![]() | C.8 | D.16 |
您最近一年使用:0次
2023-02-21更新
|
714次组卷
|
3卷引用:内蒙古包头市2022-2023学年高三上学期期末教学质量检测文科数学试题