1 . 已知抛物线
,斜率为
的直线
与抛物线
相交于
,
两点,与圆
相切于点
,且
为线段
的中点,则弦长![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/36c8deb91819338a74493ff99ce2be85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
A.2 | B.4 | C.![]() | D.![]() |
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2019-01-02更新
|
524次组卷
|
3卷引用:【校级联考】河南省名校联考2019届高三上学期联考(三)数学(理)试题
【校级联考】河南省名校联考2019届高三上学期联考(三)数学(理)试题2019届天一大联考高中毕业班阶段性测试(三)数学(理科)试题(已下线)专题3.13 直线与抛物线的位置关系-重难点题型精讲-2021-2022学年高二数学举一反三系列(人教A版2019选择性必修第一册)
2 . 若圆
的半径为
,圆心在第一象限,且与直线
和
轴都相切,则该圆的标准方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abeb57d8e728c8d9bd15e8902b70a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2018-11-26更新
|
1031次组卷
|
5卷引用:河南省示范性高中2021-2022学年高三下学期阶段性模拟联考三理科数学试题
河南省示范性高中2021-2022学年高三下学期阶段性模拟联考三理科数学试题吉林省吉林市普通中学2020-2021学年高三第三次调研测试理科数学试试题吉林省吉林市普通中学2020-2021学年高三第三次调研测试文科数学试题云南省云天化中学2018-2019学年高二上学期期中考试数学试题(已下线)第2章 圆与方程(A卷-基础卷)-2021-2022学年高二数学同步单元AB卷(苏教版2019选择性必修第一册)【学科网名师堂】
名校
3 . 已知动圆
与圆
外切,与圆
内切.
(1)试求动圆圆心的轨迹
的方程;
(2)与圆
相切的直线
与轨迹
交于
两点,若直线
的斜率成等比数列,试求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f581d0a15670dfbbcf1f97d37d111810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e494274748e0a3d44205fe8c7e4d0fcd.png)
(1)试求动圆圆心的轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fd2722d23f6fb6d32b54865bd6af70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2014·河南南阳·三模
4 . 已知圆
,直线
与圆
相切,且交椭圆
于
两点,c是椭圆的半焦距,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe8fff55c06f220725f4124e45a1e89.png)
(1)求m的值;
(2)O为坐标原点,若
,求椭圆
的方程;
(3)在(2)的条件下,设椭圆
的左右顶点分别为A,B,动点
,直线
与直线
分别交于M,N两点,求线段MN的长度的最小值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e52ad4d0f284d9e6062fbe095ec455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646aac83fd8e7318c6dd7b32d7cf0ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa3b6d9a05a35eb193e349e95b1f89d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8454989732716850cb57ca15f8ef596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe8fff55c06f220725f4124e45a1e89.png)
(1)求m的值;
(2)O为坐标原点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f16919951d315ce74a40ebd498da693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(3)在(2)的条件下,设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdd0e58df4e70da19634cc7e6fa381b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b141148d19998c842aee2e5b1de63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53933a3335904ce1cda71162968e5c8e.png)
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