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解题方法
1 . 已知椭圆方程为
(),离心率为
且过点
.
(1)求椭圆方程;
(2)动点
在椭圆上,过原点的直线交椭圆于a,
两点,证明:直线
、
的斜率乘积为定值;
(3)过左焦点
的直线交椭圆于
,
两点,是否存在实数,使
恒成立?若存在,求此时
的最小值;若不存在,请说明理由.
![](/uploads/image/squformula/1d7aea48c44781a844b5c19191f70f61.png)
![](/uploads/image/squformula/d5c7316976a221c051a2c14df80b1347.png)
![](/uploads/image/squformula/310f780f4f03699023b1322a1e002539.png)
(1)求椭圆方程;
(2)动点
![](/uploads/image/squformula/dad2a36927223bd70f426ba06aea4b45.png)
![](/uploads/image/squformula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](/uploads/image/squformula/bd33764ff4efddfe11a98a609753715c.png)
![](/uploads/image/squformula/d2be49c37e30a3ced0364c3e74d8c687.png)
(3)过左焦点
![](/uploads/image/squformula/f5076289823db419f94e9c0c8f4aafd9.png)
![](/uploads/image/squformula/ac047e91852b91af639feec23a9598b2.png)
![](/uploads/image/squformula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](/uploads/image/squformula/5cd62793a0e67480acf99ed7af502d0a.png)
![](/uploads/image/squformula/8e4ea7acf140086ae816a4025d2683dc.png)
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名校
解题方法
2 . 已知点
,动点
满足
.
(1)求点
的轨迹
的方程;
(2)若轨迹
的左右顶点分别为
,直线
与直线
交于点
,直线
与轨迹
交于相异的两点
,当点
不在
轴上时,分别记直线
与
的斜率为
,
,求证:
是定值.
![](/uploads/image/squformula/5f867fdf38b4b782f981edaa73f9283c.png)
![](/uploads/image/squformula/dad2a36927223bd70f426ba06aea4b45.png)
![](/uploads/image/squformula/f595683f69d5d6b5ca76408b0ff6ff17.png)
(1)求点
![](/uploads/image/squformula/dad2a36927223bd70f426ba06aea4b45.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若轨迹
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/01c74a907dda6bb7d9d56d009d9df253.png)
![](/uploads/image/squformula/b11449658adfc07dcf4fc0b25e7ed7c9.png)
![](/uploads/image/squformula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](/uploads/image/squformula/ac047e91852b91af639feec23a9598b2.png)
![](/uploads/image/squformula/d50703c46b6153945d718b198f03b4b5.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/f54ea1c0c4903b3222aad364b52b5f15.png)
![](/uploads/image/squformula/dad2a36927223bd70f426ba06aea4b45.png)
![](/uploads/image/squformula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](/uploads/image/squformula/20a541b81584a032f571159ea152c85a.png)
![](/uploads/image/squformula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](/uploads/image/squformula/6defc43285a40f7ccb74c1cc04265eba.png)
![](/uploads/image/squformula/423b7ae39db552e60ee8b1d27312306f.png)
![](/uploads/image/squformula/a2a3f348a942d468f0d77c0dfbb41d87.png)
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3 . 已知椭圆
的上、下顶点分别为m,n,点p为椭圆上任意一点(不同于m,n),若点q满足
,则点q到坐标原点距离的取值范围为___________ .
![](/uploads/image/squformula/e69daca955a565fa537347dd0d93783f.png)
![](/uploads/image/squformula/ee7e3ead1577781db7cb4f072c42a03f.png)
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名校
解题方法
4 . 已知点
为椭圆c:
的左焦点,
在c上.
(1)求c的方程;
(2)已知两点
与
,过点a的直线l与c交于p,q两点,且
,试判断mn是否为定值?若是,求出该值;若不是,说明理由.
![](/uploads/image/squformula/fa5c1ffd1068666e98a34a5264b5c71a.png)
![](/uploads/image/squformula/48da128547c4cf9745e8e4b99988a3db.png)
![](/uploads/image/squformula/cd7777e7a71b352a71735ae451a48b49.png)
(1)求c的方程;
(2)已知两点
![](/uploads/image/squformula/a1969829a212eddf8138a15550b0a7ca.png)
![](/uploads/image/squformula/5a6034fb1e412bf911e85f92d88e49c7.png)
![](/uploads/image/squformula/52f2ba38eb2e2280cb500d4e9f985cd0.png)
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(已下线)每日一题 第26题 定值定点 特殊探路(高三)
智能选题,一键自动生成优质试卷~
解题方法
5 . 已知椭圆e:
离心率为
,且经过点
.
(1)求椭圆e的方程;
(2)过点
且斜率不为0的直线
与椭圆c交于m,n两点,证明:直线
与直线
的斜率之积为定值.
![](/uploads/image/squformula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](/uploads/image/squformula/f89eef3148f2d4d09379767b4af69132.png)
![](/uploads/image/squformula/913f78382630e50543e5f7192cae3ed3.png)
(1)求椭圆e的方程;
(2)过点
![](/uploads/image/squformula/9da30f3b77f2318f2000fa009979f04c.png)
![](/uploads/image/squformula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](/uploads/image/squformula/d50703c46b6153945d718b198f03b4b5.png)
![](/uploads/image/squformula/f50b3ae183997b707d16eb4e7f6712fa.png)
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6 . 已知椭圆
的左右焦点分别为
,
,且椭圆过点
,直线
与椭圆
相交于
,
两点.
![](/uploads/image/idq21233stem/def8a15c98804ff0806a54bb62dd5414.png)
(1)求椭圆
的方程;
(2)若
不过原点且不平行于坐标轴,记线段
的中点为
,求证:直线
的斜率与
的斜率的乘积为定值;
(3)若
,求
面积的取值范围.
![](/uploads/image/squformula/c495971e4dab6f02b0a07ccd860c6d32.png)
![](/uploads/image/squformula/087f47d942fb125734a8a5fd599aa4f2.png)
![](/uploads/image/squformula/6a75defcf53e29d3814c4801c8ebacf0.png)
![](/uploads/image/squformula/480eeb06d3e1cb6751b367a24047e384.png)
![](/uploads/image/squformula/b89ef51dc02763c03ef4d937f6386bf1.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/5963abe8f421bd99a2aaa94831a951e9.png)
![](/uploads/image/squformula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](/uploads/image/idq21233stem/def8a15c98804ff0806a54bb62dd5414.png)
(1)求椭圆
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](/uploads/image/squformula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](/uploads/image/squformula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](/uploads/image/squformula/ac047e91852b91af639feec23a9598b2.png)
![](/uploads/image/squformula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](/uploads/image/squformula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若
![](/uploads/image/squformula/3825ccc273ef9a672a606432d165b866.png)
![](/uploads/image/squformula/866b81a8384cce4f24867baca2e6820c.png)
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解题方法
7 . 已知如图,点
为椭圆
的短轴的两个端点,且
的坐标为,椭圆
的离心率为.
![](/uploads/image/idqe2124/acef4fa0-271a-4bd0-814d-7deb9069cc85.png)
(1)求椭圆
的标准方程;
(2)若直线
不经过椭圆
的中心,且分别交椭圆
与直线
于不同的三点
(点
在线段
上),直线
分别交直线
于点
.求证:四边形
为平行四边形.
![](/uploads/image/squformula/04d468be20b4d43f5de75416de20e8ee.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/43a71fc9c0068109dad1382354570665.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/idqe2124/acef4fa0-271a-4bd0-814d-7deb9069cc85.png)
(1)求椭圆
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](/uploads/image/squformula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](/uploads/image/squformula/6684304a7537da9517c889c9cbf90a48.png)
![](/uploads/image/squformula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](/uploads/image/squformula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](/uploads/image/squformula/ef49a3ca580a144cc65a609c167facc1.png)
![](/uploads/image/squformula/14d0ff4224f475ab37c6f96d00506f69.png)
![](/uploads/image/squformula/7789a500686c7a73770404ead6af0590.png)
![](/uploads/image/squformula/0d107710e7aff959395ca6f8d23c52c7.png)
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8 . 椭圆
:![](/uploads/image/squformula/1d7aea48c44781a844b5c19191f70f61.png)
长轴长为
,左右焦点分别为
和
,
为椭圆
上一点,且
,
.
(1)求椭圆
的方程;
(2)过点
作直线交椭圆
于
,
两点,若点
,求证:直线
,
的斜率之和为定值.
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/1d7aea48c44781a844b5c19191f70f61.png)
![](/uploads/image/squformula/434249d6640b0c1a712d215cf8b83d5c.png)
![](/uploads/image/squformula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](/uploads/image/squformula/f5076289823db419f94e9c0c8f4aafd9.png)
![](/uploads/image/squformula/a3fb78c5f885034612c0e030b920143d.png)
![](/uploads/image/squformula/5963abe8f421bd99a2aaa94831a951e9.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/0a5d4143ba3fcd34e7593cdba83f4e60.png)
![](/uploads/image/squformula/1ff95584f02d812317d503c259f9f280.png)
(1)求椭圆
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](/uploads/image/squformula/4b1b1d74dab66cd83700d2b02d5eb965.png)
![](/uploads/image/squformula/c5db41a1f31d6baee7c69990811edb9f.png)
![](/uploads/image/squformula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](/uploads/image/squformula/a0ed1ec316bc54c37c4286c208f55667.png)
![](/uploads/image/squformula/4d70b4a9d6ed047b88c5b1070fbdc1ba.png)
![](/uploads/image/squformula/b5d8e33929752b1cb4dd36ee9b98b45d.png)
![](/uploads/image/squformula/360496a4f5cc8a5faca5e089ae4f9531.png)
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2卷引用:吉林省长春市第六中学2023-2024学年高二上学期1月期末考试数学试题
9 . 已知椭圆
上有不同两点
,
,
,则( )
![](/uploads/image/squformula/b747db7eaf469c6d1607e4b0d028299f.png)
![](/uploads/image/squformula/12a3efb79f35db8448f3391252ab7d4e.png)
![](/uploads/image/squformula/8df332f01628130c084fd46aaca0a4b7.png)
![](/uploads/image/squformula/14436636ec6a7aec09cb63cecf6e970d.png)
a.若![]() ![]() ![]() |
b.![]() ![]() ![]() |
c.若![]() ![]() |
d.![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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10 . 已知p为圆
上任意一点,过点p作x轴的垂线,垂足为q,m为pq的中点.m的轨迹曲线e.
(1)求曲线e的轨迹方程;
(2)曲线e交x轴正半轴于点a,交y轴正半轴于点b.直线
与曲线e交于c,d两点,若直线
直线ab,设直线ac,bd的斜率分别为
.证明:
为定值.
![](/uploads/image/squformula/a5f5d967ad135991b6075ee45df55643.png)
(1)求曲线e的轨迹方程;
(2)曲线e交x轴正半轴于点a,交y轴正半轴于点b.直线
![](/uploads/image/squformula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](/uploads/image/squformula/23976db53f05b3d5d791c4d736a7184d.png)
![](/uploads/image/squformula/90963760acac7bfad3ae03088c6c80b0.png)
![](/uploads/image/squformula/6b881044b5c73db6fcce110525741b02.png)
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