题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080146-17858.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080146-36401.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080147-87443.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080146-17858.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080146-36401.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080147-73825.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080147-86094.gif)
解析
核心考点
试题【若向量 ,满足,与的夹角为600,那么=数与平均数相等,则这组数据中位数是 】;主要考察你对平面向量数量积的意义等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080139-92190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080139-42737.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080139-82944.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080139-23287.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080140-76948.gif)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080140-64653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080134-31725.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080134-54960.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080134-31725.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080134-54960.gif)
A. 8 B.-8 C. 2 D -2
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080129-70829.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
已知
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-16391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-64648.gif)
①(2
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-16391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-64648.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-16391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-64648.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-16391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-64648.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-16391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-64648.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-16391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080125-64648.gif)
已知向量:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080119-76063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080119-66271.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080119-66271.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-14093.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-62020.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-62020.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-49278.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080119-76063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-14093.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080119-76063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-14093.gif)
(2)求f(x)=
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080119-76063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-14093.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080119-76063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-14093.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104080120-39711.jpg)
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