1 . 已知椭圆
(
)的离心率为
,且经过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1db47a746631df2abe52539a86aed1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d5f89d39-1f71-4181-8028-38eedb2b3838.png?resizew=186)
(1)求椭圆
的方程;
(2)过
作两直线与抛物线
(m>0)相切,且分别与椭圆C交于P,Q两点,直线
,
的斜率分别为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
①求证:
为定值;
②试问直线
是否过定点,若是,求出定点坐标;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1db47a746631df2abe52539a86aed1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/d5f89d39-1f71-4181-8028-38eedb2b3838.png?resizew=186)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb573fb6f6f37fd615e35c4073c2919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1efe96e7776f1b5dfa92c295f8d97d.png)
②试问直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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2023-02-19更新
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3卷引用:辽宁省营口市2022-2023学年高三上学期期末数学试题
解题方法
2 . 法国数学家加斯帕尔·蒙日被誉为画法几何之父.他在研究椭圆切线问题时发现了一个有趣的重要结论:一椭圆的任两条互相垂直的切线交点的轨迹是一个圆,尊称为蒙日圆,且蒙日圆的圆心是该椭圆的中心,半径为该椭圆的长半轴与短半轴平方和的算术平方根.已知在椭圆
中,离心率
,左、右焦点分别是
、
,上顶点为Q,且
,O为坐标原点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/96a72500-b660-4939-ac97-3e0506c1e79d.png?resizew=215)
(1)求椭圆C的方程,并请直接写出椭圆C的蒙日圆的方程;
(2)设P是椭圆C外一动点(不在坐标轴上),过P作椭圆C的两条切线,过P作x轴的垂线,垂足H,若两切线斜率都存在且斜率之积为
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.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/8180a6fc0cc7f491751b27f75d338457.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/15/96a72500-b660-4939-ac97-3e0506c1e79d.png?resizew=215)
(1)求椭圆C的方程,并请直接写出椭圆C的蒙日圆的方程;
(2)设P是椭圆C外一动点(不在坐标轴上),过P作椭圆C的两条切线,过P作x轴的垂线,垂足H,若两切线斜率都存在且斜率之积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9babb5b5ef3f30621833d88ab6e0d1.png)
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3 . 已知椭圆
的左、右焦点分别为
是
上的一个动点,直线
分别交
于
两点.设
,则当
取最小值时,
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8625667b6ef2ad79dce0851e9451fd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ed463bf16c78a4bbb9d3acff922afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d82387e48eafb286785a21a8d4150f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371be087a21609550aaef0e278dcb3e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff874f5e26ba00db29d0203676f2798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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名校
解题方法
4 . 如图所示,
为椭圆
的左、右顶点,离心率为
,且经过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/e92560a0-e911-4f0d-8363-e5df90664fe2.png?resizew=179)
(1)求椭圆
的方程;
(2)已知
为坐标原点,点
,点
是椭圆
上的点,直线
交椭圆
于点
不重合),直线
与
交于点
.求证:直线
的斜率之积为定值,并求出该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e454c7161999e2a67138869f59d319b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/e92560a0-e911-4f0d-8363-e5df90664fe2.png?resizew=179)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3263811a06227abf213822c14a314dc6.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/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff37c86dcded429052bb0b569c5740c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d42cb68c5c877a455ba7ac0a6b6a651.png)
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6卷引用:浙江省湖州市2022-2023学年高三上学期期末数学试题
5 . 已知椭圆
的离心率为
,上顶点为M,下顶点为N,
,设点
在直线
上,过点T的直线
分别交椭圆C于点E和点F.
(2)求证:直线
恒过定点,并求出该定点;
(3)若
的面积为
的面积的k倍,则当t为何值时,k取得最大值?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040d6732d32d552cb60f1a9430b67c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110e74916a254817638edbc28b1a363a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a887bfa3cac99e4bd33610515b722b.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bf66a5f30d94390f59c6a3d1ae6c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db687a72ac51db994067207e136c8857.png)
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2023-02-10更新
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1821次组卷
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5卷引用:浙江省杭州市2022-2023学年高三上学期第一次质量检测(期末)数学试题
名校
解题方法
6 . 已知椭圆C的焦点在x轴上,左右焦点分别为
、
,离心率
,P为椭圆上任意一点,
的周长为6.
(1)求椭圆C的标准方程:
(2)过点
且斜率不为0的直线l与椭圆C交于Q,R两点,点Q关于x轴的对称点为
,过点Q1与R的直线交x轴于T点,试问
的面积是否存在最大值?若存在,求出这个最大值:若不存在,请说明理由
![](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/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
(1)求椭圆C的标准方程:
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe51e659d7482eef32e571379eef3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a63317623ef141fbb2974083ab238f8.png)
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2023-01-22更新
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368次组卷
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3卷引用:广西南宁市第二中学2023届高三上学期1月月考(期末)数学(理)试题
名校
解题方法
7 . 已知椭圆C:
的左、右焦点分别为
,
,C的下顶点为A,离心率为
,过
且垂直于
的直线与C交于D,E两点,
,则
的周长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381b2cdb44897d2cf936cbcd7c20deb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
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4卷引用:内蒙古阿拉善盟第一中学2022-2023学年高三上学期期末考试数学(理科)试题
内蒙古阿拉善盟第一中学2022-2023学年高三上学期期末考试数学(理科)试题山西省部分学校2023届高三上学期第五次联考数学试题(已下线)高二下学期第一次月考模拟试题(提高卷)-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修第二册)内蒙古赤峰市阿鲁科尔沁旗天山第一中学2023-2024学年高二上学期期中数学试题
名校
解题方法
8 . 已知椭圆
:
的长轴为4,离心率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/4c784c7b-a63d-4ea6-a172-d3ab663ce4e3.png?resizew=236)
(1)求椭圆
的方程;
(2)如图,过点
的直线
与
交于
,
,过
,
作直线
:
的垂线,垂足分别为
,
,记
,
,
的面积分别为
,
,
,问:是否存在实数
,使得
为定值?若存在,求出
的值;若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/23/4c784c7b-a63d-4ea6-a172-d3ab663ce4e3.png?resizew=236)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af74113f38fffeed8075e57d7f9d2533.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.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/0c2b58424e893df4e01c912f87e09095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23b488f961d9fde37feb7f5c497c0d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2cc1bb89a17cc4a7e4443e40b71f1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb9c8bd2a8d905ee3aa7ab6bcd3ec55f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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9 . 已知椭圆
的焦距为2,过椭圆
的右焦点
且不与两坐标轴平行的直线交椭圆
于
,
两点,若
轴上的点
满足
且
恒成立,则椭圆
离心率
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f30acc34f4ee1077532ae6808af2ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aecfed6162d24874f81e9b577e01f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
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2023-01-18更新
|
703次组卷
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5卷引用:安徽省滁州市2022-2023学年高三上学期第一次教学质量监测数学试题
名校
解题方法
10 . 已知椭圆
的左、右焦点分别为
,椭圆
的离心率为
,点
在椭圆上,
的中点
在
轴上,且
,
为坐标原点.
(1)求椭圆
的方程;
(2)直线
与椭圆
交于
两点,若直线
与
的斜率之积为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c39f3ed0a9dea59326e17c797d6903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2023-01-18更新
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311次组卷
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2卷引用:河北省唐山市开滦第二中学2023届高三上学期期末数学试题