名校
1 . 设平面向量
,
,
满足
,
,
,
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5196f84fd2a77d7ee14328cc26ab1ea.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524594bf0942ed86f56fc1eee120a81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c559d3aa4e5178683a408e5b7e7cbdde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5397753affa9833ade8daaba7748e3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bb9e1b4f7ba936949195aa99d6159a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cbb7c27eb8a2af305aa60c5fa2acb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f0e123349c41a4804013241a518860.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5196f84fd2a77d7ee14328cc26ab1ea.png)
您最近一年使用:0次
2022-10-19更新
|
552次组卷
|
3卷引用:2022年7月浙江省高中数学联赛全真模拟六校联考试题
2 . 如图,点M、N分别在△ABC的边AB、AC上,且
,
,D为线段BC的中点,G为线段MN与AD的交点.若
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637ead8ff2c33546dc4b7ae439d3cffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e73df9bd672a72bd945449a606cbd27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3235f0f3c3faa679c2e9420d298a1f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2be5e24170427caed4175e2863995aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/66865588-9b96-4f15-8040-cab6d1f93f20.png?resizew=176)
您最近一年使用:0次
3 . 已知平面向量
,
,
满足
,且
,则
最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524594bf0942ed86f56fc1eee120a81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e275e2f458db459e28f43062ab8d2b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9885da9bc997ce0763edcb000b85a686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0055cbdfb047c8bd2791fefd81eb0d0d.png)
您最近一年使用:0次