题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123226-37513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-80691.png)
(1)判断
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123226-37513.png)
(2)若线段
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-11125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-75462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-29903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-75462.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-45963.png)
解析
试题分析:解:(1)根据题意,由于
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-80691.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-78832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-30341.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-98850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123228-18414.png)
(2)根据题意,由于
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123228-57986.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123228-18291.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123227-45963.png)
点评:主要是考查了向量的模和向量的共线的综合运用,属于基础题
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123216-65633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123216-35931.png)
A.点![]() ![]() | B.点![]() ![]() |
C.点![]() ![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123209-49011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123209-88622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123210-92328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123210-64433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123210-33672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123210-27496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123210-19924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123211-22349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123211-62178.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-37606.png)
(1)(
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-37606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-37606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
(3)(
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-37606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-37606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-37606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123201-88931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123202-90752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123154-25483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123154-75405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123154-52783.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123145-66463.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123145-24285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123145-19732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123146-39529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123146-87718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123146-86645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123146-10747.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123147-16995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123147-99865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105123147-69310.png)
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