名校
解题方法
1 . 如图,椭圆
,圆
,椭圆C的左、右焦点分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/982fcc91-40c1-4c1c-b1b5-68f7cb1b5d18.png?resizew=179)
(1)过椭圆上一点P和原点O作直线l交圆O于M,N两点,若
,求
的值;
(2)过圆O上任意点R引椭圆C的两条切线,求证:两条切线相互垂直.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cec1069311f0b48631d43524215250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fa27fccbb61045fb30f50c7b271082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/982fcc91-40c1-4c1c-b1b5-68f7cb1b5d18.png?resizew=179)
(1)过椭圆上一点P和原点O作直线l交圆O于M,N两点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac31e98551e5b14307482844b78c5498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e177345aea68c21205d3ff3107eb1f03.png)
(2)过圆O上任意点R引椭圆C的两条切线,求证:两条切线相互垂直.
您最近一年使用:0次
名校
解题方法
2 . 已知圆锥曲线
上的点
的坐标
满足
.
(1)说明
是什么图形,并写出其标准方程;
(2)若斜率为1的直线
与
交于
轴右侧不同的两点
,
,点
为
.
①求直线
在
轴上的截距的取值范围;
②求证:
的平分线总垂直于
轴.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd05490af0096bb615260e752b67cfb6.png)
(1)说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若斜率为1的直线
![](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/d053b14c8588eee2acbbe44fc37a6886.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
①求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2021-09-30更新
|
1395次组卷
|
3卷引用:湖南省湘潭市2021-2022学年高三上学期一模数学试题
解题方法
3 . 已知椭圆C:
(
)的离心率为
,直线
与椭圆C有且只有一个公共点.
(1)求椭圆C的标准方程
(2)设点
,
,P为椭圆C上一点,且直线
与
的斜率乘积为
,点M,N是椭圆C上不同于A,B的两点,且满足
,
,求证:
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d2d0eb98a3265ee04d540f3e59909b.png)
(1)求椭圆C的标准方程
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca22d434c8671cf39eba5fa03b31ac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2d7ff2b15c4e93fe6b92baca3c76d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459c84c9addfbd1cdd0a877ba7c584e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135642ee219ef29253e7bd35e4f47362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c0635e65b4dfedde8b411e5626aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
您最近一年使用:0次
名校
解题方法
4 . 已知点
为椭圆
上任意一点,直线
与圆
交于
,
两点,点
为椭圆
的左焦点.
(1)求证:直线
与椭圆
相切;
(2)判断
是否为定值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b93dd6eb6b474481247736699c76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482aa1008b1009aa649b2e44a5d05a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0eea02b3e07ba8b9771e9401a81f983.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36719f1e764ee0e719b65c49fae84677.png)
您最近一年使用:0次
2020-04-22更新
|
459次组卷
|
3卷引用:湖南师大附中2020届高三下学期月考(七)理科数学试题
名校
解题方法
5 . 在平面直角坐标系xOy中,已知双曲线
.
(1)过
的左顶点引
的一条渐近线的平行线,求该直线与另一条渐近线及x轴围成的三角形的面积;
(2)设斜率为1的直线l交
于P,Q两点,若l与圆
相切,求证:
;
(3)设椭圆
,若M,N分别是
,
上的动点,且
,求证:O到直线MN的距离是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250a05b5774581e78ab9a539c5d2e903.png)
(1)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)设斜率为1的直线l交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
(3)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d9a30a4a03af26eed92e787fd7501e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0b06dc01c30d13f64be2ac6a1d811e.png)
您最近一年使用:0次
2020-06-26更新
|
618次组卷
|
9卷引用:湖南省株洲市第二中学2022-2023学年高三上学期12月教学质量检测数学试题(B)
湖南省株洲市第二中学2022-2023学年高三上学期12月教学质量检测数学试题(B)沪教版(上海) 高三年级 新高考辅导与训练 第二部分 走近高考 第十一章 圆锥曲线高考题选上海市奉城高级中学2019届高三上学期期中数学试题(已下线)重难点08 直线与圆锥曲线(定点定值最值问题)-2021年高考数学【热点·重点·难点】专练(上海专用)(已下线)第14讲 双曲线- 1(已下线)2.2.2+双曲线的简单几何性质(1)(重点练)-2020-2021学年高二数学(文)十分钟同步课堂专练(人教A版选修1-1)(已下线)2.3.2+双曲线的简单几何性质(1)(重点练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)(已下线)3.2.2 双曲线的简单几何性质(1)(重点练)-2020-2021学年高二数学十分钟同步课堂专练(人教A版选择性必修第一册)沪教版(2020) 选修第一册 高效课堂 第二章 2.6 复习与小结(2)
6 . 设直线
与抛物线
交于
两点,与椭圆
交于
两点,设直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69d78f964023aa0d5db5d3ecfed5dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64ce3dd41d9899054e2ec58b736ac50.png)
(
为坐标原点)的斜率分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44f67daeddff2e805bf34d43e629d959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1596be5eb4304e89a6460580920be7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34318d598765e3c6629ffdc464cea8f4.png)
,若
.
(1)证明:直线
过定点,并求出该定点的坐标;
(2)是否存在常数
,满足
?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f4123c19136d3a4dc040dce8e34e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69d78f964023aa0d5db5d3ecfed5dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64ce3dd41d9899054e2ec58b736ac50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ba6d3a4b110f65a8d203aeadd03ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44f67daeddff2e805bf34d43e629d959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1596be5eb4304e89a6460580920be7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34318d598765e3c6629ffdc464cea8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3307e11f7e6896e32aa510bbed949ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff727d729dbf77ad82ceecf1a4d9f838.png)
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2020-01-11更新
|
299次组卷
|
2卷引用:2020届湖南省岳阳市高三第二次教学质量检测理科数学试题
名校
7 . 已知椭圆
:
,
,
分别是椭圆短轴的上下两个端点,
是椭圆的左焦点,P是椭圆上异于点
,
的点,若
的边长为4的等边三角形.
写出椭圆的标准方程;
当直线
的一个方向向量是
时,求以
为直径的圆的标准方程;
设点R满足:
,
,求证:
与
的面积之比为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ed513f56811aa1d314514c5c10d90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef3c9dd64ecdf6d1fc3ab081aeb6a23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ed513f56811aa1d314514c5c10d90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef3c9dd64ecdf6d1fc3ab081aeb6a23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa117b0621fb0e843929b033a4c09814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f670b461d9b13df3932d0b0eeaea1f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c1bc582e15c8ae375017eff356fde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f670b461d9b13df3932d0b0eeaea1f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372ba3183665678900fbed833aabb3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9763e9bc0e618b3a6338254410a058c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e25e267418280b37e7d2f0bef11b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9be82ad7b51f39e8058452b0e87b67.png)
您最近一年使用:0次
2019-11-08更新
|
463次组卷
|
6卷引用:2020届湖南省长沙市明达中学高三(高复部)第二次模拟考试理科数学试题
2020届湖南省长沙市明达中学高三(高复部)第二次模拟考试理科数学试题2019年上海市崇明区高三上学期期末(一模)数学试题(已下线)专题05 平面解析几何-2020年高三数学(理)3-4月模拟试题汇编上海市华东师范大学第三附属中学2019-2020学年高二上学期12月月考数学试题(已下线)专题02圆锥曲线全章复习攻略--高二期末考点大串讲(沪教版2020选修一)(已下线)专题02 圆锥曲线--高二期末考点大串讲(沪教版2020选修)
12-13高二上·福建福州·期末
真题
解题方法
8 . 已知椭圆
的左.右焦点为
,离心率为
,直线
与
轴、
轴分别交于点
是直线
与椭圆
的一个公共点,
是点
关于直线
的对称点,设
.
(1)证明:
;
(2)确定
的值,使得
是等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cd438c65439c766e56f2eedd897d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc44299a4ce82839a8bc589c3d706e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab3d195745f786edb98d66dc164f806.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264484e041ddf4de7e91bfcf9ce6f088.png)
(2)确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
您最近一年使用:0次
10-11高三·湖南娄底·阶段练习
9 . 设椭圆
的一个顶点与抛物线
的焦点重合,
分别是椭圆的左、右焦点,且离心率
且过椭圆右焦点
的直线
与椭圆C交于
两点.
(1)求椭圆C的方程;
(2)是否存在直线
,使得
.若存在,求出直线
的方程;若不存在,说明理由.
(3)若
是椭圆
经过原点
的弦,
,求证:
为定值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83fe2ff15ce353b0e3b7924503815de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.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/a440c796ef54519d63690da5eb870b6e.png)
(1)求椭圆C的方程;
(2)是否存在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d5fc016768abed0ba1375d0d0c47bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f689b3ebdd2e329edb7ee68dc755285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4487b728410d4ddbfedc150990109dba.png)
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