题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095230-62278.png)
A.(2,4) | B.(4,6) | C.[2,4] | D.[4,6] |
答案
解析
试题分析:因为圆(x-1)2+y2=4的圆心坐标为(1,0),与抛物线y2=4x的焦点重合,所以
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095230-51032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095231-66041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095231-47341.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095231-97811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095231-10394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095232-96134.png)
核心考点
试题【如图,直线y=m与抛物线y2=4x交于点A,与圆(x-1)2+y2=4的实线部分交于点B,F为抛物线的焦点,则三角形ABF的周长的取值范围是 ( )A】;主要考察你对抛物线的定义与方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095225-16111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095226-71915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095226-71915.png)
A.2 | B.3 | C.4 | D.5 |
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095221-53264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095221-33267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095221-33267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-73669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-46485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-68314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-46485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-75002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-29951.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-69124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-84961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095214-61252.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095215-86043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095215-60273.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-27404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-82887.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-80639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-68863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-68863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-48231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-36513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-97804.jpg)
(1)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-48231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-68863.png)
(2)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-95347.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-69105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-68863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-98285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-15994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-73333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095152-48231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-89737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095153-84944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-11784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-53670.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-76864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-98166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-81654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-98201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-77825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191024/20191024095154-98201.png)
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