名校
解题方法
1 . 已知如图椭圆
的左右顶点为
、
,上下顶点为
、
,记四边形
的内切圆为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/3630e7f0-97cb-442f-bb84-9b629835c2bc.png?resizew=233)
(1)求圆
的标准方程;
(2)已知P为椭圆
上任意一点,过点P作圆
的切线分别交椭圆
于M、N两点,试求三角形
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f036026cd92e9ad059c3f22a7658638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e5d91f4f631c580c155eba8c92bda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/3630e7f0-97cb-442f-bb84-9b629835c2bc.png?resizew=233)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)已知P为椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
您最近一年使用:0次
名校
2 . 设双曲线
的中心为O,右焦点为F,点B满足
.若在
的右支上存在一点A,使得
且
,则
离心率的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e372bcb0f24754658b568c025b4488b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92de747691a74213071dafd9aa55fcba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6fbe26a99b03b467a2672aecf5038c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
您最近一年使用:0次
2021-09-16更新
|
651次组卷
|
3卷引用:全国高中数学联赛模拟试题(十一)