名校
1 . 已知
(a,
)是直线l的方向向量,
是平面
的法向量,如果
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfc3b155435130b8c1d0e66484a4727.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8752ee706196b497099ddd8342ef3e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3849dacb9cd91d905551d858ffdd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c656aab9776eff87154d726241066459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e380108ba2cf04e68a5a9393d2b921c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfc3b155435130b8c1d0e66484a4727.png)
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解题方法
2 . 已知
,
,其中
,
,若
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b93656d46e8bd1ac7e9d14659d42c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c5d62184910f1faa373f8971f8b240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd93ee03569849295ebde055410d1b84.png)
您最近一年使用:0次
3 . 如图,三棱锥O-ABC中,M是BC的中点,
,设
用
表示向量
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf61a6de70565fbf32abe3c53c79312.png)
_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6e979e750bebbabd2a5fc706de928f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c515266d44d063e3d18da3bc556f293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2490b8c788fcdec42cb81fae32f9d0e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf61a6de70565fbf32abe3c53c79312.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/cd013d69-34b6-4b0f-8bc3-6f0b486d43ce.png?resizew=146)
您最近一年使用:0次
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4 . 对于任意向量
定义运算:
.若向量
,向量
为单位向量,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf9fc45e6dc0579eda8f3f0d63a09c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb27737e8a85ed60579509b5ff53a32f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db35dbee504e3e66bfd03c24e4b7322.png)
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5 . 已知向量
,
,若
与
共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd989ddfbed4a6aa18ea57734522153.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c622d5a6c35c6f24f17a9260dad2293e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e60d6ecd3645765d2a810be7805606.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/bfd989ddfbed4a6aa18ea57734522153.png)
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6 . 向量
在向量
方向上的投影向量的模为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b672cad6176e0fa26c169de3ef4b6b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd42e9c6b31373438f4d26dabe3378e3.png)
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解题方法
7 . 在正方体中,
,点
平面
,点F是线段
的中点,若
,则当
的面积取得最小值时,
您最近一年使用:0次
2024-01-24更新
|
609次组卷
|
5卷引用:湖北省荆州市沙市中学2023-2024学年高二下学期3月月考数学试题
名校
8 . 已知直线l的方向向量为
,则向量
在直线l上的投影向量的坐标为___________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b297e9e7647f2e16c2daca620c6780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26ef23ee2d2b448e0d1fb0bc0b7bd67.png)
您最近一年使用:0次
解题方法
9 . MN是棱长为2的正方体
的内切球的一条直径,点E为
的中点,若空间内动点Р满足AP⊥CE,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c4a886a56c3b95df238a488984b2c7.png)
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10 . 已知空间向量
,
,
,若
,
,
共面,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ea358d7a8a79c432e0d5b123be87a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0ce0f6e7644e4cbaf6718b22bcf361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320c983e8f934b74b4d1500138198c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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