解题方法
1 . 在平行四边形
中,
,
分别是边
,
上的两点,且
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2964b9f8eb74f2c1c4c48b4502cfaf5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff83ce1a2d686d750bb10a96362fbe24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba4d5e49091e85af01a675bd31ea81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4af3590fbd689b9876816bbf39123f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2964b9f8eb74f2c1c4c48b4502cfaf5.png)
您最近一年使用:0次
2021-02-06更新
|
170次组卷
|
3卷引用:青海省海东市2020-2021学年高一上学期期末考试数学试题
名校
2 . 在梯形
中,
,
,设
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360e078c90d889491b21492c05aabf85.png)
__________ (用向量
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8b26900f921ea10a44e0e37a72d85b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115aa0be249065aac72b64aed61c694a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a11474fb112272ab7109e235ee8fcc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd841cff6d043d1d0813561c2c58dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360e078c90d889491b21492c05aabf85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
您最近一年使用:0次
2018-09-13更新
|
272次组卷
|
5卷引用:青海省海南州高级中学、贵德中学2020-2021学年高一下学期期中联考数学试题
青海省海南州高级中学、贵德中学2020-2021学年高一下学期期中联考数学试题【全国百强校】吉林省长春市第150中学2017-2018学年高一下学期期末数学试题(理科)(已下线)2019年一轮复习讲练测 5.1 平面向量的概念及线性运算【浙江版】【测】宁夏回族自治区育才中学2018-2019学年高一下学期期末数学试题吉林省松原市宁江区实验高级中学2018-2019学年高一下学期期末数学试题
3 . 如图,菱形ABCD的边长为1,
,E、F分别为AD、CD的中点,则
=_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a73a304056c14d2dfde205719f0fb2.png)
![](https://img.xkw.com/dksih/QBM/2015/7/8/1572172167487488/1572172173205504/STEM/52788b0b311b43349aa8380be67b23a9.png?resizew=157)
您最近一年使用:0次
2016-12-03更新
|
1075次组卷
|
3卷引用:青海省西宁市普通高中五校2020-2021学年高三上学期期末联考数学(理)试题