题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-95610.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-17318.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-60039.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-45586.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-17318.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130824-29671.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-17318.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130824-42912.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130824-87941.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-45586.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-60039.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130824-70899.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-17318.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130825-36071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130825-23571.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130825-72757.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130825-73455.gif)
由抛物线定义知
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130825-30193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130826-80120.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130826-41135.gif)
设点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130825-36071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130826-37938.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130826-26103.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130827-90474.gif)
当弦
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130823-17318.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130824-87941.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130825-36071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130824-29671.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130827-93505.gif)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130827-62218.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130827-55553.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130828-76515.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130828-42642.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130828-35222.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130828-18801.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130828-11555.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130829-54384.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130824-42912.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130815-93261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130815-31571.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130815-73414.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130815-19667.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130816-28769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130816-15067.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130816-26278.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130816-15067.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130816-28769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130816-18779.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130816-11421.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130810-82726.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130811-60097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130811-21324.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130803-43869.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130803-96097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130756-75144.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130756-75624.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130747-58982.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130747-31756.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130748-95065.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130748-60865.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022130748-18114.gif)
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