1 . 已知圆
,圆心C在直线
上,且被直线
截得弦长为
.
(1)求圆
的方程;
(2)若
,点
,过A作两条直线
,
,且满足
,直线
交圆C于M,N两点,直线
交圆C于P,Q两点,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99566639f5c9a7ec95a24a24a60529f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa963db2b649f73b317f2324a324a43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f68d8bb1689c955cea1448bf99463ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99393efa04579f3db5cf4f7e319f0440.png)
您最近一年使用:0次
2021-10-18更新
|
1236次组卷
|
6卷引用:河北省唐山市第一中学2021-2022学年高二上学期10月月考数学试题
2 . 设点
为直线
上的动点,过点
作抛物线
的两条切线,切点为
,
.
(1)证明:直线
过定点;
(2)若以线段
为直径的圆过坐标原点
,求点
的坐标和圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e235d7dd12f948f5ffb2e5afddc95612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f4123c19136d3a4dc040dce8e34e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2021-07-27更新
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573次组卷
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3卷引用:贵州省贵阳市第一中学2021届高三下学期高考适应性月考卷(六)数学(理)试题
贵州省贵阳市第一中学2021届高三下学期高考适应性月考卷(六)数学(理)试题贵州省贵阳市第一中学2021届高三下学期高考适应性月考卷(六)数学(文)试题(已下线)卷15 选择性必修第一册高二上期中考试 总复习检测6(难)-2021-2022学年高二数学单元卷模拟(易中难)(2019人教A版选择性必修第一册+第二册)
名校
3 . 已知圆心
在第一象限,半径为
的圆与
轴相切,且与
轴正半轴交于
,
两点(
在
左侧),
(
为坐标原点).
(1)求圆
的标准方程;
(2)过点
任作一条直线与圆
相交于
,
两点.
①证明:
为定值;②求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b45be718b4f824665be05baa8c947c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78dfe0c19bd9b0928eb62571e3452ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0715f41595440a45e2c9989ae009d60.png)
您最近一年使用:0次
2021-07-12更新
|
2551次组卷
|
10卷引用:重庆市第八中学2020-2021学年高一下学期期末数学试题
重庆市第八中学2020-2021学年高一下学期期末数学试题(已下线)第二章 直线和圆的方程(提分小卷)-【单元测试】2021-2022学年高二数学尖子生选拔卷(人教A版2019选择性必修第一册)(已下线)专题2.17 直线和圆的方程大题专项训练(30道)-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)(已下线)专题09 与圆有关的定值问题-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)(已下线)2.2 直线与圆的位置关系(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)湖北省黄冈市黄州中学2021-2022学年高二上学期新起点开学考试数学试题江西省金溪县第一中学2022-2023学年高二上学期第一次月考数学试题第一章 直线和圆 单元检测卷-2022-2023学年高二上学期数学北师大版(2019)选择性必修第一册(已下线)高二上学期期中测试卷(选择性必修第一册全部范围)-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修第一册)四川外国语学院重庆第二外国语学校2022-2023学年高二上学期半期期中模拟数学试题
20-21高二·全国·课后作业
4 . 已知椭圆
=1上一点到椭圆两焦点的距离之和为4
.
(1)求a的值及椭圆的离心率;
(2)顺次连结椭圆的顶点得到菱形A1B1A2B2,求该菱形的内切圆方程;
(3)直线l与(2)中的圆相切并交椭圆于A,B两点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf81e4a17a864c947eba4590fd921f66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(1)求a的值及椭圆的离心率;
(2)顺次连结椭圆的顶点得到菱形A1B1A2B2,求该菱形的内切圆方程;
(3)直线l与(2)中的圆相切并交椭圆于A,B两点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
您最近一年使用:0次
解题方法
5 . 已知双曲线
上一动点P,左、右焦点分别为
,且
,定直线
,点M在直线
上,且满足
.
(1)求双曲线的标准方程;
(2)若直线
的斜率
,且
过双曲线右焦点与双曲线右支交于
两点,求
的外接圆方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914c2124260496e9307d6448c0c943f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcc40c0021d01b1f7bb57d62ba9de13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a70458d68ae901f9c91518299114da.png)
(1)求双曲线的标准方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c07ebcbfacda073208d483c58e8a84.png)
您最近一年使用:0次
2021-03-10更新
|
1658次组卷
|
5卷引用:河北省张家口市2021届高三一模数学试题
河北省张家口市2021届高三一模数学试题(已下线)专题1.9 圆锥曲线-双曲线-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)专题36 仿真模拟卷04-2021年高考数学二轮复习热点题型精选精练(新高考地区专用)(已下线)专题3.8 双曲线的综合问题-2021年高考数学解答题挑战满分专项训练(新高考地区专用)江苏省海安市实验中学2022-2023学年高二上学期12月月考数学试题
名校
解题方法
6 . 已知椭圆标准方程为
,椭圆的左、右焦分别为
、
,
为椭圆上的点,且
.过点
且斜率为
的直线
与椭圆交于
、
两点.
(1)求椭圆方程;
(2)若
在以
为直径的圆
上,求直线
的方程和圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e62a44b8712ce4483b8710cda0dc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5efd01d17b34ae75a2bc91c0b58208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bdac20e214b2cb3bd07f8d4778dcca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)求椭圆方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2021-01-28更新
|
412次组卷
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5卷引用:广西钦州市2020-2021学年高二上学期期末教学质量监测数学(理)试题
广西钦州市2020-2021学年高二上学期期末教学质量监测数学(理)试题(已下线)黄金卷10-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(山东高考专用)广西浦北中学2021-2022学年高二上学期期中考试数学(理)试题(已下线)期末重难点突破专题04-【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)广东省乐昌市第一中学2021-2022学年高二下学期6月学科测试数学试题
7 . 如图,已知抛物线
的焦点为F,过点F的直线交C于A,B两点,以AB为直径的圆交x轴于M,N,且当
轴时,
.
(1)求抛物线C的方程;
(2)若直线AN,AM分别交抛物线C于G,H(不同于A),直线AB交GH于点P,且直线AB的斜率大于0,证明:存在唯一这样的直线AB使得B,H,P,M四点共圆.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323232ab36943d1d5d2831d70ffcff87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ceb92b88602f8623ee9b034e1f4fee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/3a00c39c-b197-4107-a3e2-fffa8324d7fb.png?resizew=153)
(1)求抛物线C的方程;
(2)若直线AN,AM分别交抛物线C于G,H(不同于A),直线AB交GH于点P,且直线AB的斜率大于0,证明:存在唯一这样的直线AB使得B,H,P,M四点共圆.
您最近一年使用:0次
8 . 已知圆S经过点
和点
,圆心S在直线
上.
(1)求圆S的方程;
(2)若直线
与圆S相交于
两点,若
为钝角(O为坐标原点),求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7372820902e98676784530d6bb591c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b2775ee15b19e21790470c4a7505ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eaa224254a49065d213ca3a2f75f0db.png)
(1)求圆S的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40897db190d657aa67e62a3bc0a49331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a5b099b9112ed6a9f71b4a65875ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed66570f697459aba9daa2eaf9460bcb.png)
您最近一年使用:0次
2021-01-23更新
|
718次组卷
|
2卷引用:宁夏青铜峡市高级中学2020-2021学年高二上学期期末考试数学(文)试题
名校
9 . 法国数学家加斯帕尔·蒙日是19世纪著名的几何学家,他创立了画法几何学,推动了空间解析几何学的独立发展,奠定了空间微分几何学的宽厚基础.根据他的研究成果,我们定义:给定椭圆
,则称圆心在原点
,半径是
的圆为“椭圆
的伴随圆”,已知椭圆
的一个焦点为
,其短轴的一个端点到焦点
的距离为
.
![](https://img.xkw.com/dksih/QBM/2021/1/17/2638248520507392/2641136166084608/STEM/ed5b8b697790441782dc79703ad6f1e2.png?resizew=302)
(1)求椭圆
和其“伴随圆”的方程;
(2)若点
是椭圆
的“伴随圆”与
轴正半轴的交点,
是椭圆
上的两相异点,且
轴,求
的取值范围;
(3)在椭圆
的“伴随圆”上任取一点
,过点
作直线
、
,使得
、
与椭圆
都只有一个交点,试判断
、
是否垂直?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da001dad7941e6c9858637d7b62cec59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b707fdf035eb2fb4467958893c60381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2021/1/17/2638248520507392/2641136166084608/STEM/ed5b8b697790441782dc79703ad6f1e2.png?resizew=302)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb21011ea821b91d539cb763aac649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a384ae8c7e095d996e83f338abeec21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333499181deb97cb793630a3d484f178.png)
(3)在椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d9ccc4246c82939d8a659db9f28a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d9ccc4246c82939d8a659db9f28a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d9ccc4246c82939d8a659db9f28a87.png)
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2021-01-21更新
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4卷引用:江苏省无锡市南菁高级中学2020-2021学年高二上学期期中数学试题
江苏省无锡市南菁高级中学2020-2021学年高二上学期期中数学试题(已下线)期中重难点突破专题04-【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)广东省普宁市华美实验学校2021届高三下学期二模数学试题(已下线)第五篇 向量与几何 专题1 蒙日圆与阿氏圆 微点9 阿波罗尼斯圆综合训练
名校
10 . 已知
的边
所在直线的方程为
,
满足
,点
在
所在直线上且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/fa1c0b67-ca09-4083-9273-388403942902.png?resizew=188)
(1)求
外接圆的方程;
(2)一动圆过点
,且与
的外接圆外切,求此动圆圆心的轨迹
的方程;
(3)过点
斜率为
的直线与曲线
交于相异的
,
两点,满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751bf4d00190b30344d20214aa72eac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35141e617bf4eff06d52e30b801902b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47151e4f21770c2e314963beac849e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf2d6e2c7bf59661de5c0fb75eb70c9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/fa1c0b67-ca09-4083-9273-388403942902.png?resizew=188)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)一动圆过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12796b93f8489abab501f6896d5359dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2dc48b8e6d553c5bc85cdb0040cec56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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