已知
,
,动圆
与圆
外切且与圆
内切. 圆心
的轨迹为曲线
.
(1)求曲线C的方程;
(2)是否存在过点
的直线
交曲线C于A,B两点,使得点Q为中点时,直线
的斜率与直线OQ的斜率乘积为定值?如果存在,求出这个定值,如果不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6988eb8df26a32432551a230edeb718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218765ebab9d615eb41fe2259c647d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线C的方程;
(2)是否存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f00485d3aea3ca00ba645163a8e4a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
23-24高二上·四川成都·阶段练习 查看更多[4]
四川省成都市实验外国语学校2023-2024学年高二上学期第一阶段考试数学试题(已下线)专题03 圆锥曲线的方程(3)(已下线)专题03 圆锥曲线题型全归纳(九大考点)-【寒假自学课】2024年高二数学寒假提升学与练(人教A版2019)(已下线)微考点6-3 圆锥曲线中的定点定值问题(三大题型)
更新时间:2023-12-03 22:10:18
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,圆
为圆
上任意一点,过
作圆
的切线,分别交直线
和
于
两点,连接
,相交于点
,若点
的轨迹为曲线
.
(1)设直线
的斜率分别为
,求
的值,并求曲线
的方程;
(2)记直线
与曲线
有两个不同的交点
,与直线
交于点
,与直线
交于点
,求
的面积与
的面积的比值
的最大值及取得最大值时
的值.
(注:
在点
处的切线方程为
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6caeef3619714b83e1a2823abb1a5667.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2600a54b7bf3f79aaec7d49a47f6b4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d2b01f86fb5a373af6b089cf3d891b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b96dce1ec94eb90c243b2eddb78476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392b39c0310e6a179b35ea4a2d256de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392b39c0310e6a179b35ea4a2d256de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e8835a9c569d54a9243b7907145ee9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9161b1b33582cfc2793645001d640356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e414c8514a581ff4b283b3fd8e7ab9a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab4cf09670861e61d67cbe70bb149a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2600a54b7bf3f79aaec7d49a47f6b4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2d51264ea240fe484b4103adc13d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14c393980cbd293e5a3e06348e1222f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2662ede870cde3d201cee80cb7dfd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89611b9f979d7c07c68b4a972454fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a964fe74bdc48f0a138d722d4717ca12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19936f17f11a2d68da88b5782f73631.png)
![](https://img.xkw.com/dksih/QBM/2018/6/6/1961602626306048/2000949185765376/STEM/d23c9839de904283a2f71580d85cc8ff.png?resizew=217)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,已知圆
,点
是圆
内一个定点,
是圆
上任意-一点,线段
的垂直平分线
和半径
相交于点
,连接
,记动点
的轨迹为曲线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/510cddda-2448-4c58-8e3f-c752f4e7c78e.png?resizew=175)
(1)求曲线
的方程;
(2)若
、
是曲线
上关于原点对称的两个点,点
是曲线
.上任意-一点(不同于点
、
),当直线
、
的斜率都存在时,记它们的斜率分别为
、
,求证:
的为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b373a7e45d49f5f193f5335bc9602dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](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/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8db072e2b6104671b82f948012fb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/510cddda-2448-4c58-8e3f-c752f4e7c78e.png?resizew=175)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若
![](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/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.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/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.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/6b881044b5c73db6fcce110525741b02.png)
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】已知点
在椭圆
上,设
,
,
分别为椭圆的左顶点,上顶点,下顶点,且点
到直线
的距离为
.
(1)求椭圆的方程;
(2)设
为坐标原点,
,
为椭圆上两点,且
,试问
的面积是否为定值,若是,求出定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d89571be5ad616ff0aecf3720c8377.png)
(1)求椭圆的方程;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8198c3b302b3820e86763428eb1e91cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a23aa736ef0670912709420d9604f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c81341669dd4184fc0bbf8e8db87ef2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】在平面直角坐标系xOy中,已知椭圆
(
)的右焦点为F,左顶点为A,下顶点为B,连结BF并延长交椭圆于点P,连结PA,AB.记椭圆的离心率为e.
(1)若
,
,求椭圆C的标准方程;
(2)若直线PA与PB的斜率之积为
,求e的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c9187ab4738ea0fb7faad266b72610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba56b41fe702d9b6433e4d01e48d69a0.png)
(2)若直线PA与PB的斜率之积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6486784415f3537c9a13556c05d893.png)
您最近一年使用:0次