名校
解题方法
1 . 已知抛物线
与椭圆
存在相同的焦点,第一象限内曲线
上的一点
到其焦点的距离为2,直线
与
相交于
两点(不与
点重合),直线
,
关于直线
对称.
(1)求证:直线
的斜率为定值;
(2)若椭圆
上存在不同的两点关于直线
对称,求原点到直线
距离的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f80080fac68745fe783b879cccb6140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724fd240c60553bffc050d502e9a18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751b1b0a7043f66ae805a8b473e4a7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-02-09更新
|
640次组卷
|
2卷引用:四川省广安市第二中学校2022-2023学年高二下学期第一次月考数学(理)试题
2 . 已知椭圆
的左、右焦点分别为
,过点
作直线
(与
轴不重合)交
于
两点,且当
为
的上顶点时,
的周长为8,面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb5577e464a02b38365a7d963642ad6.png)
(1)求
的方程;
(2)若
是
的右顶点,设直线
的斜率分别为
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322a98c752d29b5721f17cb269564b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656690e5d6fe1b44a4983086229f34ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb5577e464a02b38365a7d963642ad6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](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/9e9913c4712821819af99d54b3dcfd19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667cb59b1d1cb18b48d881b154013650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0f3d01ffbe8e92705998320ddf2f44.png)
您最近一年使用:0次
2023-01-16更新
|
1932次组卷
|
7卷引用:湖北省荆州市沙市中学2022-2023学年高三下学期2月月考数学试题
名校
解题方法
3 . 在xoy坐标平面内,已知椭圆
的左、右焦点分别为
、
,直线
与
相交于A、B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/5c575c67-f6cd-498c-a8b6-80a32626836a.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/1b3bfeac-39dd-441b-9ade-9f03b2f51281.png?resizew=187)
(1)记d为A到直线
的距离,当
变化时,求证:
为定值;
(2)当
时,求
的值;
(3)过B作BM⊥x轴,垂足为M,OM的中点为N,延长AN交
于另一点P,记直线PB的斜率为
,当
取何值时,
有最小值?并求出此最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dfefe29b9f7643bf7099ee21345afc.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/2cdaf3914f625c7535a8ddc019ff4cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/5c575c67-f6cd-498c-a8b6-80a32626836a.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/1b3bfeac-39dd-441b-9ade-9f03b2f51281.png?resizew=187)
(1)记d为A到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1531b008d36fbc27fb940a8efe239c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f79c04df9051331559b1bbf20aa007.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30892784d3f0a6ef780c9fa42796df2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c600e7bc9ca4f34bd849c27efdf33b7.png)
(3)过B作BM⊥x轴,垂足为M,OM的中点为N,延长AN交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3fbcd952073f38340769b8fbca5b23.png)
您最近一年使用:0次
2022-12-15更新
|
786次组卷
|
2卷引用:湖北省襄阳市第四中学2022-2023学年高二上学期第三次月考数学试题
4 . 如图,在平面直角坐标系
中,已知椭圆
的左、右顶点分别为
,过左焦点
的直线与椭圆交于点
(点
在点
的上方).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/aeb78e00-02a2-411b-adbd-7fb2417fdbcf.png?resizew=276)
(1)求证:直线
的斜率乘积为定值;
(2)过点
分别作椭圆的切线,设两切线交于点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/aeb78e00-02a2-411b-adbd-7fb2417fdbcf.png?resizew=276)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae75ef3ed2a12bc27d49bfd728260fbe.png)
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
:
经过点
且离心率为
,
,
是椭圆
的两个焦点.
(1)求椭圆
的方程;
(2)设
是椭圆
上一点,直线
与椭圆
交于另一点
,点
满足:
轴且
,求证:
是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2784a52c4da98dc9df661fc152fc29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753d79cae64871e4fe2d7125580ee514.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638d4ffa3432b037725727a30ec31d3a.png)
您最近一年使用:0次
名校
解题方法
6 . 已知椭圆
的左、右焦点分别为
,
,
为
上一点,且当
轴时,
.
(1)求
的方程;
(2)设
在点
处的切线交
轴于点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f3e6d607f4023f52652013eaf5a980.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa9a6be97b5f275d55697fd3cd0a442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc63c0a188f19cff0517e87b33c420a1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f5d82b6143092d57f11f31bb006913.png)
您最近一年使用:0次
2022-12-27更新
|
831次组卷
|
5卷引用:内蒙古呼和浩特第二中学2022-2023学年高三上学期12月月考数学文科试题
内蒙古呼和浩特第二中学2022-2023学年高三上学期12月月考数学文科试题河南省中原名校联盟2023届高三上学期12月教学质量检测数学文科试题(已下线)专题13 圆锥曲线压轴解答题常考套路归类(精讲精练)-1(已下线)考点15 直线与圆锥曲线相切问题 2024届高考数学考点总动员(已下线)重难点突破06 弦长问题及长度和、差、商、积问题(七大题型)-1
名校
解题方法
7 . 已知椭圆的中心在原点,焦点在
轴上,
、
分别为左、右焦点,椭圆的一个顶点与两焦点构成等边三角形,且
.
(1)求椭圆方程;
(2)对于
轴上的某一点
,过
作不与坐标轴平行的直线
交椭圆于
、
两点,若存在
轴上的点
,使得对符合条件的
恒有
成立,我们称
为
的一个配对点,求证:点
是左焦点
的配对点;
(3)根据(2)中配对点的定义,若点
有配对点
,试问:点
和点
的横坐标应满足什么关系,点
的横坐标
的取值范围是什么?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/71a491f5a2f0651ec8d20780a49b1bf8.png)
(1)求椭圆方程;
(2)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47fad1530eff87a020a1a947cfb56258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd0825e68122a65426840fbf07cf296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(3)根据(2)中配对点的定义,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df15a1a5b257810d95275c7c98700319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181bf533e8e9029426c4a011cfa01f90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
您最近一年使用:0次
8 . 已知椭圆
的左,右顶点分别为A,B,直线
交椭圆C于P,Q两点,直线
与x轴不平行,记直线
的斜率为
,直线
的斜率为
,已知
.
(1)求证:直线
恒过定点;
(2)设
和
的面积分别为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6286bad689739bba255aa7c3c06321.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8dcc9f79fe5f07f25447aa442ee14ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59c4295f918205f5598ecc9a96d8867.png)
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9 . 动点M与定点
的距离和M到定直线
的距离之比是常数
.
(1)求动点M的轨迹G的方程;
(2)设O为原点,点
,过点A的直线l与M的轨迹G交于P、Q两点,且直线l与x轴不重合,直线
分别与y轴交于R、S两点,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3680f7d0d96efc5b207c8e9552e21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)求动点M的轨迹G的方程;
(2)设O为原点,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8314b1fdf7dcef270ac0a2567609242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1aaf5c27cab84ebf216ac14252083e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37aa696544881fcd3fe2d57106f51573.png)
您最近一年使用:0次
2022-12-09更新
|
734次组卷
|
2卷引用:黑龙江省哈尔滨市第九中学校2022-2023学年高二上学期12月月考数学试题
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解题方法
10 . 已知椭圆
上有点
,左、右焦点分别为
.
(1)求椭圆的标准方程;
(2)若点Q为椭圆的上顶点,椭圆上有异于Q的两点
满足
,求证:直线
恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc2210a7e09298897f6585ad08a70d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f49644cd9fa4688cc3a74a234952530.png)
(1)求椭圆的标准方程;
(2)若点Q为椭圆的上顶点,椭圆上有异于Q的两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0615bfe416db14d15783f764613ae84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2022-12-06更新
|
778次组卷
|
8卷引用:河南省青桐鸣2023届高二上学期11月联考数学试题