题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215508-41015.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215508-52867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-31366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-43900.png)
(1)求以线段
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-10537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-46300.png)
(2)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-31366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215508-41015.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215510-78734.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215510-67559.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215510-22915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-31366.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-46300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215510-93784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-31366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-55976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-38960.png)
解析
试题分析:(1)将圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-27512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-61417.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-76458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-57096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-31875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-76458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-55340.png)
(2)设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215513-70640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215513-80082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215513-87326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215513-66247.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215514-64001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215514-64001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215513-70640.png)
试题解析:(1)将圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-27512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215515-90989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215515-82798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-61417.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-76458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-57096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215515-92899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215512-31875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-46300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215515-66369.png)
设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215513-70640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215516-27882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215516-85927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215510-22915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215516-26595.png)
因此圆心
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215516-66797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215513-70640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215516-26942.png)
解之得
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215517-69462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215517-88163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215509-31366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-55976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215511-38960.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215452-19161.png)
直线AB恰好经过椭圆T:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215453-90008.png)
(1)求椭圆T的方程;
(2)已知直线l:y=kx+
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215453-86717.png)
求△OPQ面积的最大值.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215446-18731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215447-96314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215447-98688.png)
则直线与圆的位置关系是( )
A.相交过圆心 | B.相交而不过圆心 | C.相切 | D.相离 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215438-76893.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215428-29583.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215428-74196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215428-88708.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215352-81032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-33857.png)
(1)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-96871.png)
(2)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-13506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-56819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-96871.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-64443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-13506.png)
(3)是否存在斜率是1的直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215354-94619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215354-94619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215353-96871.png)
原点?若存在,试求出直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215354-94619.png)
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