题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-49516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-88163.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-88210.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-87306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-49516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-88163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-49516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-88163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-49516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-87306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041733-81254.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041733-88285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041732-88210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041733-88285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041733-75736.png)
核心考点
试题【已知圆O的半径为1,PA、PB为该圆的两条切线,A、B为两切点,那么·的最小值为________.】;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/20191104/20191104041727-50074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041727-66738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041727-25941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041728-53601.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041719-82216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041719-35918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041719-71803.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041719-28316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041720-53500.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041720-75719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041706-35907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041707-35077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041707-14648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041707-36899.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041707-31493.png)
(2)求正整数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041708-67828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041708-83443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041658-29822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041659-86790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041659-87341.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041659-30305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041659-24851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041659-29840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041653-27900.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041653-39226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041653-94455.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041654-69328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104041654-40530.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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