题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131311-87400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131311-93723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131311-93723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131311-70380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131311-58281.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131312-36727.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131312-11772.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131312-26105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131312-91774.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131313-18898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131313-14817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131313-64709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131314-94022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131314-63915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131314-18909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131312-26105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131314-52995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131315-29699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131315-77843.png)
两式相减,得:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131315-72856.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131315-81470.png)
同时除以
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131316-29616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131316-51835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131314-18909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131316-21263.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131316-11012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131317-57835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131317-28782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131317-20208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-87701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-28450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131314-18909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-33977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-59502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-33977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-87701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-48576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131319-21378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131318-87701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131314-18909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131319-53225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131319-18956.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131319-69659.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131320-79953.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131320-20729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131320-85765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131321-71727.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131254-14877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131254-49794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131254-14877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131254-29292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131254-62170.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131242-80686.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131242-13763.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131242-20229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131243-53037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131243-47636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131243-85395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131243-84208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131243-27626.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131244-63811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131244-47778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131244-93369.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131245-39750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131245-55586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131245-51493.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131245-33779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131246-75734.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131247-31934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131247-31934.png)
已知点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131229-48721.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131230-15773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131231-75432.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131231-61686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131231-30251.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131232-94025.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131232-25406.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131232-94025.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131232-90664.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131232-26566.jpg)
如图,过抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131153-42005.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131153-67581.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131153-24545.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131153-98181.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131154-41010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131154-79704.jpg)
(1) 设点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131154-41010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131154-81407.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131154-56704.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131154-88939.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131155-79361.gif)
(2) 设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131155-83774.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131155-46083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131153-24545.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131155-89635.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131155-29231.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025131155-89635.gif)
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