1 . 已知椭圆C:
(a>b>0)的离心率
,短轴长为
.如图,椭圆左顶点为A,过原点O的直线(与坐标轴不重合)与椭圆C交于P,Q两点,直线PA,QA分别与y轴交于M,N两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d5a3a07e-06c3-477b-b0ba-bbbdf9324e87.png?resizew=183)
(1)求证:
为定值;
(2)试问以MN为直径的圆是否经过定点?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/d5a3a07e-06c3-477b-b0ba-bbbdf9324e87.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c828c44a61d2eca627dd4fd96f3cedb6.png)
(2)试问以MN为直径的圆是否经过定点?请证明你的结论.
您最近一年使用:0次
2022-12-26更新
|
722次组卷
|
2卷引用:云南省昆明市第三中学2022届高三上学期第五次综合测试数学(理)试题
名校
解题方法
2 . 已知椭圆
过点
,且离心率为
.设
,
为椭圆
的左、右顶点,
为椭圆上异于
,
的一点,直线
,
分别与直线
相交于
,
两点,且直线
与椭圆
交于另一点
.
(1)求椭圆
的标准方程;
(2)求证:直线
与
的斜率之积为定值;
(3)判断三点
,
,
是否共线:并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/310f780f4f03699023b1322a1e002539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
(3)判断三点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2022-10-11更新
|
1675次组卷
|
9卷引用:江苏省金陵中学集团南京市人民中学2021-2022学年高二上学期10月月考数学试题
解题方法
3 . 已知圆O:
.
(1)求证:过圆O上点
的切线方程为
.类比前面的结论,写出过椭圆C:
上一点
的切线方程(不用证明).
(2)已知椭圆C:
,Q为直线
上任一点,过点Q作椭圆C的切线,切点分别为A、B,利用(1)的结论,求证:直线AB恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1410414ebd007a6aebfb75240e2b458f.png)
(1)求证:过圆O上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d340bd3f078b9261238d4fe59f1473c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128aa322f3e76e8f03a7402bb2b2ae25.png)
(2)已知椭圆C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
您最近一年使用:0次
2022-02-27更新
|
510次组卷
|
4卷引用:河南省南阳市2021-2022学年高三上学期期末数学(理)试题
河南省南阳市2021-2022学年高三上学期期末数学(理)试题河南省南阳市2021-2022学年高三上学期期末数学(理科)试题(已下线)技巧04 解答题解法与技巧(练)--第二篇 解题技巧篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》(已下线)专题36 切线与切点弦问题
解题方法
4 . 椭圆C:
与x轴交于A、B两点,点P是椭圆C上异于A、B的任意一点,直线
、
分别与y轴交于点M,N,
(1)求证:
为定值
.
(2)若将双曲线与(1)中的椭圆类比,试写出得到的命题,并判定其真假(不要求给出证明过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4aec049f638c95d4fb5c0f163dd7699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfb0bbf86f8da2c412e3b3210aef356.png)
(2)若将双曲线与(1)中的椭圆类比,试写出得到的命题,并判定其真假(不要求给出证明过程).
您最近一年使用:0次
名校
5 . 在平面直角坐标系xOy中,已知点E(0,2),以OE为直径的圆与抛物线C∶x2=2py(p>0)交于点M,N(异于原点O),MN恰为该圆的直径,过点E作直线交抛物线与A,B两点,过A,B两点分别作拋物线C的切线交于点P.
(1)求证∶点P的纵坐标为定值;
(2)若F是抛物线C的焦点,证明∶∠PFA=∠PFB.
(1)求证∶点P的纵坐标为定值;
(2)若F是抛物线C的焦点,证明∶∠PFA=∠PFB.
您最近一年使用:0次
解题方法
6 . 已知双曲线
上有三点
,且
的中点分别为
,设直线
的斜率都存在,分别记为
,且
,直线
的斜率都存在,分别记为
,
(1)求证
;
(2)类比(1)中结论,写出椭圆
中类似的结论,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0e08a39c6619123557148d195abfbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e8ebdbd58b757fc18d53f7a57348ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca1726d463bd741c904abd9b6589056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f59eb7008cb65c5dede5363f7c40534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0e08a39c6619123557148d195abfbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae35aad83022311eebadcdfee6d45f3.png)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3792426d62415dd198a0b083f42ae59.png)
(2)类比(1)中结论,写出椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
您最近一年使用:0次
7 . 已知椭圆方程
,直线
与
轴相交于点
,过右焦点
的直线与椭圆交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/2a578fbb-b7c1-47fb-bc8a-99389451ebc1.png?resizew=230)
(1)若过点
的直线
与
垂直,且与直线
交于点
,线段
中点为
,求证:
.
(2)设
点的坐标为
,直线
与直线
交于点
,试问
是否垂直
,若是,写出证明过程,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/2a578fbb-b7c1-47fb-bc8a-99389451ebc1.png?resizew=230)
(1)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cfde7b3d70c60ccc5187a12477b48f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d738555c0a4b2c15ae61d4e85fdbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
您最近一年使用:0次
名校
解题方法
8 . 在平面直角坐标系中,已知
为坐标原点,点列
,直线系
,
,若直线
与直线
交于点
.
(1)求证:点
在抛物线上,并求出该抛物线的方程;
(2)设
,
为(1)中抛物线上两个不同的点,直线
,
的斜率分别为
,
,且
,证明:直线
经过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebe8cf09b5ddaa37deabcb0599e1193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230da62e505c4dfd3dbbd38f7311abc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7c5e7bd6bac51402ffa04b4144ec78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9123b1c8cb0bbaca44e8464bee03678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddad3d9fdb5e9951b6a1c31f9a72a71.png)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddad3d9fdb5e9951b6a1c31f9a72a71.png)
(2)设
![](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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.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/0f745dbb0d0e93c05041935ea760eb50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2021-01-02更新
|
303次组卷
|
5卷引用:苏教版(2019) 选修第一册 突围者 第3章 第三节 课时1 抛物线的标准方程
9 . 如图,已知椭圆
,矩形ABCD的顶点A,B在x轴上,C,D在椭圆
上,点D在第一象限.CB的延长线交椭圆
于点E,直线AE与椭圆
、y轴分别交于点F、G,直线CG交椭圆
于点H,DA的延长线交FH于点M.
![](https://img.xkw.com/dksih/QBM/2021/1/13/2635062232326144/2636119953145856/STEM/0d304ada-7221-4566-ab41-d75b8ee9bbdb.png)
(1)设直线AE、CG的斜率分别为
、
,求证:
为定值;
(2)求直线FH的斜率k的最小值;
(3)证明:动点M在一个定曲线上运动.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d366fe265032467147cc806f240e6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://img.xkw.com/dksih/QBM/2021/1/13/2635062232326144/2636119953145856/STEM/0d304ada-7221-4566-ab41-d75b8ee9bbdb.png)
(1)设直线AE、CG的斜率分别为
![](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/67351fe10fcfc3f9072eec4c60bfaaa5.png)
(2)求直线FH的斜率k的最小值;
(3)证明:动点M在一个定曲线上运动.
您最近一年使用:0次
2021-01-14更新
|
3319次组卷
|
10卷引用:江苏省泰州市2020-2021学年高三上学期期末数学试题
江苏省泰州市2020-2021学年高三上学期期末数学试题(已下线)专题26 椭圆(解答题)-2021年高考数学(理)二轮复习热点题型精选精练(已下线)专题25 椭圆(解答题)-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)仿真系列卷(05) - 决胜2021高考数学仿真系列卷(江苏等八省新高考地区专用)江苏省扬州中学2020-2021学年高二下学期开学考试数学试题(已下线)黄金卷08-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(江苏专用)(已下线)第3章 圆锥曲线与方程(培优卷)-2021-2022学年高二数学新教材单元双测卷(苏教版2019选择性必修第一册)(已下线)3.1椭圆C卷(已下线)专题7 圆锥曲线之极点与极线 微点1 圆锥曲线之极点与极线(已下线)第五篇 向量与几何 专题4 极点与极线 微点1 圆锥曲线之极点与极线(一)
10 . 设斜率不为
的直线l与抛物线
交于A,B两点,与椭圆
交于C,D两点,记直线OA,OB,OC,OD的斜率分别为
.
(1)若直线l过
,证明:
;
(2)求证:
的值与直线l的斜率的大小无关.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07f2cc60fd12f088db9e5c6a8468aad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c65902e35640cf2c8d4111c36b40145.png)
(1)若直线l过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1a65d88f9823d49da8f3b96ea9ec6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097bf1392e36ab1105404e241e0f5e80.png)
您最近一年使用:0次
2021-01-06更新
|
464次组卷
|
5卷引用:第三章 圆锥曲线的方程 单元检测(A卷)- 2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)
(已下线)第三章 圆锥曲线的方程 单元检测(A卷)- 2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)(已下线)第三章 (基础过关)圆锥曲线的方程综合 A卷-2021-2022学年高二数学同步单元AB卷(人教A版2019选择性必修第一册)广东省广雅中学、执信、六中、深外四校2020届高三8月开学联考数学理试题(已下线)专题07 解析几何中的证明问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖第二章+平面解析几何(能力提升)-2020-2021学年高二数学单元测试定心卷(人教B版2019选择性必修第一册)