在
中,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7fcfdd78a31f7b6784cb4d94417a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1371c97ec3d0ea7b3ef979f5538d330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-03-13 22:37:16
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【知识点】 利用平面向量基本定理求参数
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】
中,点
为边AC上的点,且
,若
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db638038a5ed4b4f743b6dec8ff9fb15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f062c1ced859002ba975ae97c27cb608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e6485310d98e9bd577da0c87c38dc4.png)
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单选题
|
较易
(0.85)
名校
解题方法
【推荐2】如右图
,“六芒星”是由两个全等正三角形组成,中心重合于点
且三组对边分别平行.点
,
是“六芒星”(如图1)的两个顶点,动点
在“六芒星”上(内部以及边界),若
, 则
的取值范围
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/29/e06023f4-3db3-4769-b44f-1cf7ee1fb7b8.png?resizew=324)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d093706141016f4e2fde905738cd481e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/29/e06023f4-3db3-4769-b44f-1cf7ee1fb7b8.png?resizew=324)
A.![]() | B.![]() | C.![]() | D.![]() |
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