名校
1 . 在正方体
中,点
在线段
上,且
.当
为锐角时,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83adcd9118c724bea14ae39b539cf89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-03更新
|
240次组卷
|
2卷引用:山东省烟台第一中学2023-2024学年高二下学期2月月考数学试题
2 . 已知向量
,
,且
与
互相垂直,则实数
等于
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf2a72888f3daaeab0cdecef4f3b73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574f43725c6f9a1c94ba8f22ee25f1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6a30979a2ca2cd7a1e59ce52d49100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e49d17d4ad440d37c6f4bc8daba25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://img.xkw.com/dksih/QBM/2024/2/5/3426709001084928/3448293685895168/STEM/3f8e9b04f62c4867bc77b0be0f9b3518.png?resizew=4)
A.![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
3 . 已知空间向量
,
,且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3e84916f89f0cffc2e03c879b65fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8d49bf33e578b25811e22e26dbf584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ebe5febe579965236eaa87b571e5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0043d442fc7bd9177c2e3716d3d762.png)
A.![]() | B.![]() | C.2 | D.4 |
您最近一年使用:0次
2024-03-04更新
|
250次组卷
|
3卷引用:山东省烟台第一中学2023-2024学年高二下学期2月月考数学试题
解题方法
4 . 已知点
是平行四边形
所在平面外一点,如果
,
,
,下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce9089022a8fdc4cd455b311a16f94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb0119751f0aee7c7f22576d8e359c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c02c104e1eb6c9d1f65759da7667a1a.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() | D.四边形![]() |
您最近一年使用:0次
5 . 已知空间向量
,则
在
上的投影向量的坐标是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec646287efdd23ed62b03f674e98ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
您最近一年使用:0次
6 . 已知
,
,若
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b46ae4e1dfc7508892f56c234c0d3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e94b772eea2bf8f9768eca3848dbc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03481e6a73207be03fdbc1f8e9965b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
7 . 已知向量
,
,
,若
共面,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317d779a75636d13e22c7a2da2a1faac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bda748f1164d6891ed75334d3244de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6285b36675aed337017bb6864504b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
名校
8 . 已知点
、
、
,则向量
在
上的投影向量是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879d3f360a44c1490523d4bd285a3a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4511343c7a7c0d6bdf6a4d68f58a8c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8aab839aece09fe69811df09e85e7cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
您最近一年使用:0次
2024-02-05更新
|
114次组卷
|
2卷引用:山东省枣庄市第八中学2023-2024学年高二上学期学科素养诊断数学试题
名校
9 . 已知点
是点
在坐标平面
内的射影,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8575fe354f1d81b944fedb13bafe496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b5ec46ff9eb7ba24446c5fd3b33bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5b06f57b825616050a9b897fb1a50b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-29更新
|
290次组卷
|
3卷引用:山东省潍坊市临朐县第一中学2023-2024学年高二上学期期末模拟数学试题
名校
10 . 已知
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf76d70416fd1bc135ac428e56adfa34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38938d4c3a93170ddfbfc3fb4d8b3aa.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-12-21更新
|
271次组卷
|
3卷引用:山东省泰安市泰安一中2023-2024学年高二上学期期末数学试题