题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021504-68227.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021504-52463.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021504-94756.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-96067.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-89769.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-45379.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-29455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021506-12214.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021506-56164.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021506-83903.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-29455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021506-94428.gif)
所以只需求
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021506-31747.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021507-14294.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021507-15199.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021507-53777.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021507-92922.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021507-14082.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021508-86492.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021506-31747.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021508-23580.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-29455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021506-94428.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021508-25585.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021508-65522.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-89769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021509-11084.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-89769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021505-45379.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021500-25904.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021452-88477.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021452-57824.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021448-86777.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021432-79029.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021425-15521.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021426-64955.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021426-19592.gif)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021426-30678.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021426-34014.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021427-62559.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016021427-60878.gif)
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