题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042350-10080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042350-90280.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042350-29912.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042350-64990.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042350-92067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042351-65565.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042351-44742.png)
解析
试题分析:由图可知
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042351-62484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042351-50104.png)
核心考点
试题【如图,在边长为1的正六边形中,,,,则 . 】;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/20191104/20191104042341-90225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042341-78877.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042341-89741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042341-69058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042342-15648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042342-15648.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042342-77697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042342-20680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042341-69058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042342-26895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042343-82101.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042335-34617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042335-99098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042335-78473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042335-99098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042335-35244.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042336-28344.png)
A.t1=-4,t2=-1 | B.t1=-4,t2=1 | C.t1=4,t2=-1 | D.t1=4, t2=1 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042329-80230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042330-40009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042330-98409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042330-93787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042330-98409.png)
A.圆 | B.椭圆 | C.双曲线 | D.抛物线 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042322-49039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042322-25028.png)
A.5 | B.-5 | C.![]() | D.-![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042314-84754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104042314-56620.png)
A.1 | B.3 | C.5 | D.9 |
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