解题方法
1 . 已知椭圆
的左焦点为
,若
关于直线
的对称点
恰好在
上,且直线
与
的另一个交点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c681798734b618e5ca129d2a9837d797.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c681798734b618e5ca129d2a9837d797.png)
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2 . 若圆
上有四个点到直线
的距离为
,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddf61ac5c0c64a0ba01fdb3c7877808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04eed461026f69fe9ab2c5dc12af8ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
您最近一年使用:0次
2023-06-09更新
|
1233次组卷
|
3卷引用:湖南省长沙市周南中学2023届高三二模数学试题
名校
解题方法
3 . 设椭圆
的左右焦点分别为
和
,离心率为
,过左焦点
且倾斜角为
的直线与椭圆交于
,
两点,且线段
,则
的内切圆半径等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
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4 . 设直线
与两坐标轴的交点分别为
,点
为线段
的中点,若圆
上有且只有一个点
,使得直线
平分
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efeb0531933d89f1fa2262355ae55a4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed93d4372f5f5b2245f3f4610e70c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7121bfdb53eb8307706e8c63c4569b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efeb0531933d89f1fa2262355ae55a4.png)
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2023-05-12更新
|
781次组卷
|
2卷引用:湖南省长沙市长郡中学2023届高三高考前保温卷(1)数学试题
名校
5 . 已知
是椭圆
的左、右焦点,
为椭圆的上顶点,
在
轴上,
,且
.若坐标原点
到直线
的距离为3,则椭圆
的标准方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786bd647ef52e29c6ba9c65624dafa4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b9c284d566596d2f4fb8471e3e3b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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解题方法
6 . 如图,
分别是双曲线
的右顶点和右焦点,过
作双曲线的同一条渐近线的垂线,垂足分别为
为坐标原点,若
,则
的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8348c89c6f13053325f4e1c62e29a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8348c89c6f13053325f4e1c62e29a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8097ef2bfc673483a7ef2ab9af0d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bdeba9e610528526df7021a96db12e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/b4f218c0-8f9e-45dc-b4a6-28eb52cfc036.png?resizew=200)
您最近一年使用:0次
2023-04-22更新
|
539次组卷
|
3卷引用:湖南省怀化市2023届高三二模数学试题
7 . 已知直线
与圆心坐标为
(
为整数)且经过点
的圆C相切,直线m:
与圆C相交于A、B两点,则下列说法正确的是______ .
①圆C的标准方程为
;
②若
,则实数
的值为2;
③若
,则直线
的方程为
或
;
④弦
的中点M的轨迹方程为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e04a6d711600fc4f8a8df876a85cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180735d52856f4393e40e28e7fcc95bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497911bc462170183e81d95bd509b70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be584b5afdb49843b1da1eaeb49eaee1.png)
①圆C的标准方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c2f9bc74275491cb5972fefdf4d98e.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df9b574c6b6a4c878bf425d4fa31d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699fc9b7e879af4866aaa07848dfb423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23fc11a3a7592c68b20f93bdde2ed3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8de4ad34fea7225e8d31a58cf6fa550.png)
④弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa81fbb4586f647e550f01a9712d0037.png)
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2023-03-15更新
|
505次组卷
|
2卷引用:湖南省张家界市2023届高三下学期3月高考模拟数学试题
名校
解题方法
8 . 已知双曲线
的渐近线与圆
相切,则双曲线的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2affa2f968907083e02d6bf0338607.png)
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2023-01-14更新
|
1433次组卷
|
8卷引用:湖南省岳阳县第一中学2024届高三下学期6月适应性考试数学试题
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9 . 圆
的圆心到直线
的距离为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa74a750d8d54ff86df0421c1ff8f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
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2022-03-15更新
|
584次组卷
|
5卷引用:湖南省衡阳市2022届高三下学期三模数学试题
10 . 已知
,则
最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956808ebb1d60d9f4854cab99b18016a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d90c217baa691bf3f791ce81319654.png)
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2021-06-26更新
|
372次组卷
|
3卷引用:湖南省永州市2021届高三高考押题卷数学试题(二)
湖南省永州市2021届高三高考押题卷数学试题(二)吉林省松原市前郭县、长岭县、乾安县2021届高三5月联考数学试题(已下线)考向14 导数的概念及应用(重点)-备战2022年高考数学一轮复习考点微专题(新高考地区专用)