题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154848-72150.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154849-97238.gif)
(1) 求证:抛物线与直线相交;
(2) 求当抛物线的顶点在直线的下方时,
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154849-21841.gif)
(3) 当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154849-21841.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154849-18073.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154849-24717.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154850-74836.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154850-84562.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154850-83123.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154850-62386.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154849-97238.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154851-24884.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154851-44067.gif)
(3)设直线与抛物线的交点为
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154851-66325.gif)
则
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154851-17378.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154852-90679.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154852-21662.gif)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154833-56822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154833-95025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154833-10960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154833-14755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154834-73992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154834-66720.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154819-54641.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154819-98311.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154819-59776.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154820-32004.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154820-72124.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154820-72124.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154820-13439.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154820-23294.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154821-27898.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154820-72124.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154821-66974.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154806-30622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154806-78752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154806-56806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154806-83718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154806-78752.png)
A.双曲线 | B.椭圆 | C.抛物线 | D.圆 |
已知直线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154754-54728.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154754-81338.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154754-87038.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154754-78108.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154754-74658.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154755-42467.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154755-21400.gif)
(1)求抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154755-12047.gif)
(2)证明:无论
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154755-85952.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154756-14118.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154756-78000.gif)
(3)记
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154756-19491.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154756-73690.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154756-75708.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154744-16242.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154745-24120.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154745-71582.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154745-59092.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154745-49836.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154746-24634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154746-74607.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154744-16242.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025154746-31368.gif)
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