题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071102-96230.gif)
⑴
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071102-45919.gif)
⑵若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071103-50903.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071103-90952.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071103-67836.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071103-42816.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071104-66893.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071104-85641.gif)
⑵
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071104-16908.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071104-10720.gif)
①当
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071105-96373.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071105-62887.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071105-53363.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071105-43523.gif)
②当
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071106-17226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071105-43523.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071106-45244.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071106-51937.gif)
③当
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071106-43306.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071105-43523.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071107-53897.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071107-67155.gif)
解析
核心考点
试题【已知向量⑴;⑵若】;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/20191104/20191104071057-27567.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071057-56516.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071057-33264.gif)
A.(![]() | B.(![]() | C.(7,-9) | D.(9,-7) |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-48196.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-68732.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-68732.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-44191.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-90785.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-24262.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-24262.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-48196.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-90785.gif)
则cos (
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-68732.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071050-24262.gif)
已知M=
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071043-65844.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071044-42187.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071044-27359.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071044-68987.gif)
⑴求y关于x的函数关系式y=f(x);
⑵若x∈[0,
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071045-52859.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071045-60191.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071045-89293.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071037-20899.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071038-88515.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071038-16215.gif)
A.6 | B.-6 | C.12 | D.-12 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071028-47897.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071029-81536.gif)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071029-35638.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071029-66957.gif)
(2)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071029-70682.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071030-12891.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071030-27559.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071030-19503.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104071030-46266.gif)
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