名校
解题方法
1 . 已知向量
和
满足
,
,且
,则
与
的夹角为( )
![](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/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939955fcd19578dc8f37415c60b187ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89db934fbfbcb264cf37cafc0814e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-12-27更新
|
118次组卷
|
5卷引用:2015-2016学年甘肃省金昌市永昌一中高一上学期期末数学试题
解题方法
2 . 已知向量
,
,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71bf8043b7c01820cf46f4976eea855.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d7bfc86d0fc35a3d16e24e8de7c3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66603b85d3bf9f65a5fb8a9074d949ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71bf8043b7c01820cf46f4976eea855.png)
您最近一年使用:0次
名校
3 . 已知
,
,且
,则向量
在
方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939955fcd19578dc8f37415c60b187ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c116cf6e7a89b553137fa5917954b6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 已知向量
,
,则
,
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35325b12aded89037f86f59e57c8c97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5356fac8b160d1a24b63da3f65293d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 若向量
,
,且
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1812783adc5185dae98280c6005c6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e902691221a3b4f305a7d07120a8bdff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4beea5a4cd3fd6770d21df23211281ee.png)
您最近一年使用:0次
6 . 执行如图的程序框图,则输出的λ是
![](https://img.xkw.com/dksih/QBM/2020/3/1/2410295859126272/2412353673232384/STEM/62b4c67e5c974674b3e4cc1d4d455fb2.png?resizew=319)
![](https://img.xkw.com/dksih/QBM/2020/3/1/2410295859126272/2412353673232384/STEM/62b4c67e5c974674b3e4cc1d4d455fb2.png?resizew=319)
A.-2 | B.-4 | C.0 | D.-2或0 |
您最近一年使用:0次
7 . 已知向量
与
的夹角为60°,
,
,当
时,实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](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/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68f557aff5fd2009f5b9079af4dc044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
名校
解题方法
8 . 若向量
是两个互相垂直的单位向量,则向量
在向量
方向上的投影为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89887ec687a624907f9a5d1f7d8e359f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
您最近一年使用:0次
2016-12-05更新
|
404次组卷
|
2卷引用:甘肃省民乐县第一中学2020-2021学年高三上学期第二次诊断考试数学(文科)试题
9 . 已知
为两个垂直的单位向量,
为实数,若向量
与向量
垂直,则
____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0d6f45010a54e0bfa0b48c90376ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
您最近一年使用:0次
2016-12-12更新
|
882次组卷
|
4卷引用:2013届甘肃省甘谷一中高三上学期第一次检测文科数学试卷
(已下线)2013届甘肃省甘谷一中高三上学期第一次检测文科数学试卷(已下线)2014年高考数学(理)二轮复习体系通关训练1-5练习卷2020届河南省平顶山许昌济源高三第一次质量检测数学(文)试题福建省福州市闽江口联盟校2021届高三上学期期中联考数学试题
10 . 两个非零向量a,b互相垂直,给出下列各式:
①a·b=0;②a+b=a-b;③|a+b|=|a-b|;
④|a|2+|b|2=(a+b)2;⑤(a+b)·(a-b)=0.
以上结论正确的是______________ (写出所有正确结论的编号).
①a·b=0;②a+b=a-b;③|a+b|=|a-b|;
④|a|2+|b|2=(a+b)2;⑤(a+b)·(a-b)=0.
以上结论正确的是
您最近一年使用:0次