在
中,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1bfb857a8c1af3f7980aebeda20b2a2.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054c47fe9b9dd25d0e1e7e7f3403c0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1bfb857a8c1af3f7980aebeda20b2a2.png)
更新时间:2024-05-22 14:09:24
|
相似题推荐
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】如图已知正方形
边长为
,点
在线段
上,且AP=2PC,则
的值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024db150fef7ac4cee5e887654597022.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/ae5ab5de-d6c5-4a17-872a-ceb913dd7e8c.png?resizew=92)
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
【推荐1】设向量
,
,且
,
,则
的最大值是__________ ;最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deae5171eb718a10261d9b632aa7c2ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcb140aa73fbe827043dca511ea1335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbdbbbb7309584928ccf1ed81443bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d404eeda30a541b554f1283af35acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6ceabdf8d71c68e40cd47403937470.png)
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
解题方法
【推荐1】已知
,
为单位向量,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
___________ ,向量
在向量
上的投影向量为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92734ab8cc6c161200fb01053e6ef0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835e02e88155c4f117c86c80783c082d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】满足下述条件的两组基底
与
叫做一组“对偶基底”:
,i,
,当
,
均为单位向量,且
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f72518e1d561572c5e4e530e5ac60b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcca70bf3f90f702fcbf58c2838ec979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8b62d31675ae76b31666127ee032a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b89edc7bca2cd5cf3448f07efd1c30b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f69f148cb981e801a2ae2b75dc841027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a223991a4ec2ca30469960f093ddb1c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc72f5677dda2b1de520c4cc3c1ceb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf7a81cc71f798c538a5194a5cbffe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f72518e1d561572c5e4e530e5ac60b.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐3】已知
为一平面上的定点,
为此平面上不共线的三点,若
, 则
的形状是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9311507d1c8900939e892ecf5ae81643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次