题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-80637.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-53910.gif)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-60653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-10074.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210948-72442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210948-95146.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210948-72442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210948-95146.gif)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210949-41371.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-60653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-10074.gif)
答案
⑴
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210949-22645.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210949-24720.gif)
对称轴方程是:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210949-37724.gif)
解析
先进行向量运算,再化简三角函数式
(1).
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210950-28517.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210950-94077.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210950-25829.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210950-94077.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210951-82937.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210951-37089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210948-72442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210948-95146.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210948-72442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210951-89990.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210952-33966.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210952-74586.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210952-17534.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210952-43662.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210949-41371.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-60653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210947-10074.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210949-24720.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210953-70982.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210949-37724.gif)
函数
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210953-16201.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210953-39775.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210954-89085.gif)
核心考点
试题【已知向量,, (1)若⊥, 且-<<. 求;(2)求函数|+|的单调增区间和函数图像的对称轴方程.】;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/20191105/20191105210937-52561.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210937-52420.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210937-86709.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210938-73856.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210938-85080.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210928-33347.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210928-18828.gif)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210917-27303.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210917-66730.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210917-51499.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210918-90701.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210918-80715.gif)
(1)求:3a+b-3c;
(2)求满足a=mb+nc的实数m,n.
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210909-90592.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210909-18586.gif)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210909-93272.gif)
(2)当|
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210909-18586.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105210909-93272.gif)
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