设向量
,
满足
,
,且
,则向量
在向量
方向上的投影为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7143c24a0f6abee7f14a3f1a8ddbb467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1a967c139cd07a874e9969c9b4f357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d752da184267996aeed03978c4514509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b37b1b1c2803e723337c20b554c5cd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2019-04-29 22:55:50
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】已知
,
,且
,则向量
在
方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28280aaac77be24aa72379e49b6f01e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e7d45b34339af42c78260ca29f3af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcef00d9a9013a2d63e447363ed2a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】
是边长为
的等边三角形,已知向量
,
满足
,
,则下列结论正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4830a5e6437787c7cfc05f8b5c3ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46339ad09a0f145eae10dee14e6c287d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b5960e052f614ae45628785cb2cbf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7f28061fedc322bf9432c03571802b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94f2be1c3710641dbde0119d259f578.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐2】设非零向量
,
,满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66037b2cc75e7e3b4b6deb500634dd79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe62dc5a5a5dc4bbeb6c99400fc7dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb7c265e25589c83929ccf37526e190.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次