如图,
为
内一点,且满足
.则
的面积与
的面积之比为.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/7df70c67-8982-4cfe-b867-3f314b0ed938.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6038ff122536e4092fde922298d3002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0c821fe9c60965c45b16fc7761f9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9178fc8b5d65aa75fa9196294a0db7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/7df70c67-8982-4cfe-b867-3f314b0ed938.png?resizew=136)
A.![]() | B.![]() |
C.![]() | D.![]() |
2019高三·全国·竞赛 查看更多[2]
更新时间:2018-12-26 12:13:19
|
【知识点】 向量的坐标表示,数量积
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【推荐1】在
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单选题
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【推荐2】已知点
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