名校
解题方法
1 . 下列选项中正确的是( )
A.若向量![]() ![]() ![]() ![]() ![]() |
B.设向量![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.若平面向量![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-03-24更新
|
1936次组卷
|
4卷引用:安徽省安庆市宿松县2021-2022学年高一下学期4月期中考试数学试题
2 . 已知
,
为一组单位基向量,且向量
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ad70ed868814e5057b6a4123465a9f.png)
(1)若
,
(其中
,
是方向分别与x,y轴正方向相同的单位向量),
,求x的值;
(2)若
(其中的e为无理数,
…),
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b28baf17059c56ee9ad1ae4814acd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b04618e5b2db68f2de6ba68972c505c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69613c3bd6e8ab69a6bafc8de92af70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ad70ed868814e5057b6a4123465a9f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03ad7afacbcbec765ce4fc5ec511cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d93888ae28aa1262fbd6ea40f1aff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d753a0a27ec4302346bcee918ebd3e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2079be0b9d0919862ca5bc8ea565f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1880e3bb442d478b6dca1ab56eb054ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ec4e8e4b8863af9774bcd739a73ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4e3c71ea833a4aefb79542a2e0fbbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8d40e257f9c446b8e30fa841b74bbd.png)
您最近一年使用:0次