题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235206-14548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235206-95755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-56108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-17008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-84038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-84038.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-12828.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-84038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235208-62633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-84038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235208-62633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-17008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235206-95755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235208-72847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235206-14548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-17008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235208-88662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235208-56421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235209-23049.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235209-58901.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235207-12828.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235158-79732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235159-24766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235159-88462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235159-96938.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235159-24766.png)
(1)求证:直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235159-28991.png)
(2)写出圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235159-24766.png)
(3)圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235159-24766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235200-92118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235200-98563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235200-87857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235200-62020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235200-11605.png)
有一种大型商品,A、B两地都有出售,且价格相同,某地居民从两地之一购得商品后运回的费用是:A地每公里的运费是B地每公里运费的3倍. A、B两地距离为10公里,顾客选择A地或B地购买这件商品的标准是:包括运费和价格的总费用较低.已知P地居民选择A地或B地购物总费用相等.
(1)以A、B所在的直线为x轴,线段AB的中点为原点建立如图直角坐标系,试确定点P所在曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235148-33808.png)
(2)请说明(1)中曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235148-33808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235148-60423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235131-53026.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235131-54450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235131-24344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235131-98947.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235132-82715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235131-24344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235132-82715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235131-53026.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235132-43358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235132-79794.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235132-79080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235132-82715.png)
(2)求证:经过
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235133-47318.png)
(3)求弦
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235133-73926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235114-89409.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235114-97969.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235114-49966.jpg)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235109-15781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235109-49192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022235109-80644.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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