名校
解题方法
1 . 已知圆C经过
两点,圆心在直线
上.
(1)求圆C的标准方程;
(2)若圆C与y轴相交于A,B两点(A在B上方).直线
与圆C交于M,N两点,直线
,
相交于点T.请问点T是否在定直线上?若是,求出该直线方程;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c6e26f00e8355a504646be0720e19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42498f6e0fc9a61c9857b70a87f02c5e.png)
(1)求圆C的标准方程;
(2)若圆C与y轴相交于A,B两点(A在B上方).直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd55f837e9c4e6bba1163ef13edd09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
您最近一年使用:0次
2021-11-12更新
|
713次组卷
|
4卷引用:河南省南阳市2020-2021学年高一上学期期末数学试题
2 . 在平面直角坐标系
中,圆
:
.
(1)
为直线
:
上一点.
①若点
在第一象限,且
,过点
作圆
的切线,求切线方程;
②若存在过点
的直线交圆
于点
,且
恰为线段
的中点,求点
纵坐标的取值范围;
(2)已知
,
为圆
上任一点,求一定点
(异于点
),使
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b028286277ca44bf85a50ef447dbfd6.png)
①若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616c25ef280e91a181807bfd66b10898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
②若存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a56e5ddc6dc057aa4076130cc6ce19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532fd707f04337e9cb109e6202d32298.png)
您最近一年使用:0次
3 . 已知圆
,点
坐标为
.
(1)如图1,斜率存在且过点
的直线
与圆交于
两点.①若
,求直线
的斜率;②若
,求直线
的斜率.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/75bb4acc-93c8-4ca6-8810-48203a3265da.png?resizew=146)
(2)如图2,
为圆
上两个动点,且满足
,
为
中点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
(1)如图1,斜率存在且过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebac01772fba6b0eb3fbf14472a7f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f4947ae72c574f1dc8b7b2015d3ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/75bb4acc-93c8-4ca6-8810-48203a3265da.png?resizew=146)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cfe541293cab8a9a37d23b16ad7577e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/5752dcdc-ebe3-4370-80c5-01776f3ec220.png?resizew=148)
您最近一年使用:0次
4 . 已知圆C经过点
,
,且圆心在直线
上
(1)求圆C的方程.
(2)过点
的直线与圆C交于A,B两点,问:在直线
上是否存在定点N,使得
(
,
分别为直线AN,BN的斜率)恒成立?若存在,请求出点N的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6419842dafa17823b3907ec5d46cf9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f73293249aff08b24badac1ec04a5b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56eca5455fdd1964dea47a5544a1ad67.png)
(1)求圆C的方程.
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad325c3389ea9d72ebeb1ad89701114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cdbd5595cda7ea9d88a9654ac0151fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ff131c92aa9e10f696d374216cdcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0721e40e4c6929a24c54d2035c4014a.png)
您最近一年使用:0次
2020-02-14更新
|
700次组卷
|
3卷引用:河南省鹤壁市2019-2020学年高一上学期期末数学试题
名校
5 . 如图,在平面直角坐标系
中,已知点
,圆
:
与
轴的正半轴的交点是
,过点
的直线
与圆
交于不同的两点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/ec101ce9-c40c-4f1a-8e03-2d2cc69aca41.png?resizew=179)
(1)若直线
与
轴交于
,且
,求直线
的方程;
(2)设直线
,
的斜率分别是
,
,求
的值;
(3)设
的中点为
,点
,若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7703165c3a15c78118f08e62ddca8ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/ec101ce9-c40c-4f1a-8e03-2d2cc69aca41.png?resizew=179)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53da03483697543eeae841aebcd50d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf702adb116c1e46569eb7050d029f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c965b6673b5fe3164325ef11d4908e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905bff4015a5740df742efc7250f43d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1ddff9c93c234562c44d1808831bc5.png)
您最近一年使用:0次
2020-03-31更新
|
1575次组卷
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7卷引用:浙江省绍兴市柯桥中学2019-2020学年高二上学期期中数学试题
浙江省绍兴市柯桥中学2019-2020学年高二上学期期中数学试题江苏省南通市启东中学2019-2020学年高一(普通班)下学期期初考试数学试题江苏省南通市启东中学2019-2020学年高一(创新班)下学期期初考试数学试题(已下线)专题08 直线和圆的方程的压轴题(二)-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)(已下线)专题07 《圆与方程》中的解压题压轴题(1)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)浙江省宁波市余姚市梦麟中学2022-2023学年高二上学期10月月考数学试题浙江省衢州市江山中学2023-2024学年高二上学期10月阶段性检测数学试题
6 . 已知圆
,点
在抛物线
上,
为坐标原点,直线
与圆
有公共点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/cdb6505e-6f3c-4e64-b61d-cfa226e38b3a.png?resizew=235)
(1)求点
横坐标的取值范围;
(2)如图,当直线
过圆心
时,过点
作抛物线的切线交
轴于点
,过点
引直线
交抛物线
于
两点,过点
作
轴的垂线分别与直线
交于
,求证:
为
中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d937c7cf1f0724d7d126533e49be4114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/cdb6505e-6f3c-4e64-b61d-cfa226e38b3a.png?resizew=235)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)如图,当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ce799db1630af8c8112fad754ee96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
您最近一年使用:0次
2019-07-10更新
|
558次组卷
|
2卷引用:河北省衡水市衡水中学2019-2020学年高三上学期期中数学(理)试题
名校
7 . 已知圆
,
为圆内一点,
为圆上的动点,且
,
是
的中点.
(1)求点
的轨迹方程;
(2)过点
的直线
与点
的轨迹交于
两点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259e9a874ba8a4fbc027e01699a81d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222ed48baf754fd0f7b8191e5becb98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab4cf09670861e61d67cbe70bb149a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9121702c83ef9864c05a2e666f4d32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc601d6a5f90568d8e42238f00ca2ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317d7ac04c9cf58ee1503f1a1bf9e3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcef5c4d2ecca9ce35fd9ed7b6a36852.png)
您最近一年使用:0次
名校
8 . 已知圆C过点
,且与圆
外切于点
,
是x轴上的一个动点.
求圆C的标准方程;
当圆C上存在点Q,使
,求实数m的取值范围;
当
时,过P作直线PA,PB与圆C分别交于异于点P的点A,B两点,且
求证:直线AB恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79524ae8e494739dbcc5097a0f7c78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fb58388a2af941d6658d345829c198.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fef9380b394a4bd829c83a5a5b4c859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50188630604c9019e00e79b21f32b20a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13364e4af8eb2ed915fa0f1caef47dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc304a55feec5d8312d3082f1bb91a23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671e0271ef5d6f9784178b28d7d60265.png)
您最近一年使用:0次
2018-12-11更新
|
1293次组卷
|
3卷引用:【市级联考】江苏省苏州市常熟市2018-2019学年高二(上)期中数学试卷
【市级联考】江苏省苏州市常熟市2018-2019学年高二(上)期中数学试卷(已下线)第02练 圆与方程-2022年【寒假分层作业】高二数学(苏教版2019选择性必修第一册)河南省洛阳市洛宁县第一高级中学2022-2023学年高二上学期11月月考数学试题
9 . 已知直线
与圆
相交于
两点,点
,且
,若
,则实数
的取值范围是__________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c62a5bc2ddd8b57ed3ab0e3adc507d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada25f76504c3fd1226da43c94cb4277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dfb53b8cfebf749bf4c5d70a8b0cc7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2018-10-26更新
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1934次组卷
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2卷引用:湖北省黄冈联考协作体2018-2019学年高三上学期期中理科数学试题
10 . 已知点R为曲线
上任意一点,定点
满足
,过点
分别作斜率为
,
的曲线
的动弦AB,CD,设P,Q分别为线段AB,CD的中点.
求曲线的方程;
当线段AB长度最小时,求
;
若
,求证直线PQ恒过定点,并求出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0103772593e637b3c9adf736e92751ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d535d53fb78e9354a21a2c09593b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e5df6f119904492064df4a63d875ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f375dc5addedc5f9fbb72d566939c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731f980ccb6f902d460d0ea2920bfe2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f375dc5addedc5f9fbb72d566939c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80036fbb56747a7a63faed9cee348d9d.png)
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