题目
题型:月考题难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002151-59076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002151-67762.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002151-12971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002151-90171.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002151-71391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002151-24627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002151-77145.png)
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002152-47121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002152-87164.png)
(2)|2
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002152-31974.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002152-18892.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002153-97166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002153-36868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002153-18126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002153-96809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002154-99546.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002154-82539.png)
又|
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002154-36012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002154-81559.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002155-97281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002155-68990.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002155-35188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002155-11439.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002155-44233.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002156-94820.png)
解得cos<
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002156-50142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002156-76595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002156-88662.png)
又0≤<
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002157-92949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002157-53237.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002157-78697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002157-52025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002158-20999.png)
(2)|2
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002158-81668.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002158-42197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002158-82391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002159-96296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002159-19343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002159-29512.png)
∴|2
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002159-83460.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002159-41317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002200-38405.png)
核心考点
试题【已知向,满足||=1,||=6,且(﹣)=2,求:(1)与的夹角;(2)|2﹣|的模.】;主要考察你对平面向量模和夹角的坐标表示等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002144-56749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002145-84123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002145-20392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002145-45894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002145-54897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002140-52356.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002140-20001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002141-21676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002141-69792.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002141-88901.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002141-18204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002141-25656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002141-60154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002141-90221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002112-39484.png)
(Ⅰ)求函数f(x)的最大值和最小值;
(Ⅱ)如图,函数f(x)在[﹣1,1]上的图象与x轴的交点从左到右分别为M、N,图象的最高点为P,求
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002112-51182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002112-62639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105002113-66001.png)
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