题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195428-66681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195429-64180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195429-31765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195429-63171.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195430-75519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195430-51970.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195430-75519.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195430-15001.png)
解析
试题分析:设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195430-94224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195431-49936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195431-75331.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195431-79099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195432-98321.png)
又a,b在非零向量c上的投影相等,则
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195432-73065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195432-50689.png)
由①②联立得:∴
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195432-24336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195433-10624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195433-90653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195433-60393.png)
核心考点
试题【已知向量,,若,在非零向量上的投影相等,且,则向量的坐标为 .】;主要考察你对空间向量的直角坐标运算等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195417-77461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195418-43403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195418-64216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195418-35790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195419-48876.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195409-46653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195409-98843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195409-46056.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195410-74589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195410-50121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195410-42774.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195404-60088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195404-40327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195405-45174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195405-71399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195405-72205.png)
A.p=4,q=1 | B.p=1,q=4 | C.p=0,q=4 | D.p=1,q=-4 |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195354-14941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195354-13493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195354-66651.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195354-51328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105195355-40568.png)
A.-3 | B.![]() | C.0 | D.![]() |
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