已知菱形
边长为
, 则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b631814972a9f0de53c6022723feeb66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a119284e69f3a2a20476306d349d13c8.png)
A.![]() | B.![]() | C.2 | D.4 |
更新时间:2022-07-21 12:51:10
|
【知识点】 用定义求向量的数量积解读
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】已知菱形ABCD的边长为2,M为DC的中点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7844c7458dfa233a27275819e73bbd8.png)
A.![]() | B.2 | C.![]() | D.3 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】在
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13c5afa6fc49a0c6648058d4b062e81.png)
,设
,则
的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13c5afa6fc49a0c6648058d4b062e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea833a7a06e7e26dfd4475b9efc35f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830a59c79b52c5ab1b40661780cd5470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c03ff333ed73251dcb17228dd87fd8cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次