1 . 如图,在平行四边形
中,
,
,
,
,
,
是平行四边形
所在平面内一点,且
.若
,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/2021/11/18/2856039445012480/2895562126598144/STEM/15c034b6-cde3-4363-b4e1-3c38d095e88a.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a46dc0bb5d8fa33583817e530a5d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255a3e8a03775d0fc699ee1f7bb61a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e8c1551d814f36aa6773ff5986c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0bc87edf409479ea7d73278ed4f987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2047ceb577ccb3a944173f310777ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9b4ca7bd0e6c086d75b81f1761d387.png)
![](https://img.xkw.com/dksih/QBM/2021/11/18/2856039445012480/2895562126598144/STEM/15c034b6-cde3-4363-b4e1-3c38d095e88a.png?resizew=199)
A.![]() | B.![]() | C.0 | D.2 |
您最近一年使用:0次
解题方法
2 . 在矩形ABCD中,
BC=2,点F在CD边上,若
则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff007759f7a5e09bc6a78760528bc9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5707f6a166d8069a15504940566b766f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038185491fc19334524967c674e33523.png)
A.0 | B.2 | C.![]() | D.4 |
您最近一年使用:0次
2021-02-07更新
|
272次组卷
|
4卷引用:贵州省毕节市2021届高三上学期诊断性考试数学(文)试题(一)
3 . 已知向量
,
,
,
,若
,则实数t的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedb56850be6b61ffd7da402afa923eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca048e948dae0c9882da9e6a7ce6663.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235ff50f2382ca781d50d8ad509f324c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7889d8ac3c5b69e22dd8c03e9290c566.png)
A.![]() | B.![]() | C.4 | D.![]() |
您最近一年使用:0次