名校
解题方法
1 . 如图,已知椭圆
,抛物线
,点A是椭圆
与抛物线
的一个交点,过点A的直线l交椭圆
于点B,交抛物线
于点M(B、M不同于A).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/541e211a-ea30-4fc9-bc71-5a96ea01b799.png?resizew=165)
(1)若抛物线的焦点是椭圆的一个焦点,求p的值;
(2)若直线l过椭圆的右焦点,求
面积的最大值及此时直线l的方程;
(3)若存在不过原点的直线l使M为线段AB的中点,求p的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad5c24ed80bb57cb2ac412b7b0d74b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0107aa23cf707446f947fa236421c1f0.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/541e211a-ea30-4fc9-bc71-5a96ea01b799.png?resizew=165)
(1)若抛物线的焦点是椭圆的一个焦点,求p的值;
(2)若直线l过椭圆的右焦点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
(3)若存在不过原点的直线l使M为线段AB的中点,求p的最大值.
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2卷引用:上海市七宝中学2023届高三下学期4月月考数学试题
2 . 已知椭圆
:
的右焦点为
,过
的直线
交
于
,
两点.
(1)若直线
垂直于
轴,求线段
的长;
(2)若直线
与
轴不重合,
为坐标原点,求
面积的最大值;
(3)若椭圆
上存在点
使得
,且
的重心
在
轴上,求此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/d16dceee-564d-4856-a09c-b892471f017d.png?resizew=163)
(1)若直线
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若直线
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4769c9daa0a0bfbab08b5fbddb415404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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9卷引用:上海市青浦区2022届高考二模数学试题
上海市青浦区2022届高考二模数学试题(已下线)第16讲 圆锥曲线综合上海市奉贤区致远高级中学2023届高三下学期3月教学评估数学试题上海市同济大学第一附属中学2023届高三三模数学试题上海市同济大学第一附属中学2023届高三下学期5月月考(质控2)数学试题上海市文来中学2024届高三上学期期中数学试题(已下线)第10讲 高考难点突破二:圆锥曲线的综合问题(定值问题) (精讲)(已下线)专题24 圆锥曲线中的存在性、探索性问题 微点3 圆锥曲线中的存在性、探索性问题综合训练辽宁省沈阳市第二中学2022-2023学年高二上学期12月月考数学试题
3 . 已知椭圆
的离心率为
,左、右顶点分别为
、
,点
、
为椭圆上异于
、
的两点,
面积的最大值为
.
(1)求椭圆
的方程;
(2)设直线
、
的斜率分别为
、
,且
.
①求证:直线
经过定点.
②设
和
的面积分别为
、
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.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/acc290b44635265137fdf13146b6a6d9.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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.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/d81cbcac2960449504a852dac07902ba.png)
①求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a551505ae42b49904bab59b17012d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9c5ae63072e1684cf1c242c8133d8a.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/c59c4295f918205f5598ecc9a96d8867.png)
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|
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19卷引用:上海市复兴高级中学2023届高三适应性练习数学试题
上海市复兴高级中学2023届高三适应性练习数学试题上海市2023届高三考前适应性练习数学试题浙江省杭州市2023届高三下学期教学质量检测(二模)数学试题天津市十二区重点学校2023届高三下学期联考(二)考前模拟数学试题(已下线)专题09 平面解析几何(已下线)数学(天津卷)(已下线)专题07 平面解析几何(已下线)专题17 押全国卷(理科)第20题 圆锥曲线(已下线)押新高考第21题 圆锥曲线江苏省苏州市第五中学2023届高三下学期4月适应性考试数学试题河南省濮阳市第一高级中学2023届高三高考模拟质量检测理科数学试题福建省”德化一中、永安一中、漳平一中“三校协作2023届高三适应性考试数学试题天津市实验中学2023届高三考前热身训练数学试题江苏省镇江中学2023届高三三模数学试题(已下线)专题15 圆锥曲线综合河南省信阳市2023-2024学年高三上学期第二次教学质量检测数学试卷四川省泸州市2023-2024学年高二上学期期末模拟考试数学试题浙江省宁波市鄞州中学2023-2024学年高二上学期11月月考数学试题(已下线)河南省信阳市2023-2024学年高三上学期第二次教学质量检测数学试题变式题17-22
名校
解题方法
4 . 已知椭圆
的长轴长是短轴长的两倍,且过点
.
(1)求椭圆
的方程.
(2)若点
,点
为椭圆
上的任意一点,求
的最大值与最小值.
(3)设椭圆
的下顶点为点
,若不过点
且不垂直于坐标轴的直线
交椭圆
于
,
两点,直线
,
分别与
轴交于
,
两点.若
,
的横坐标之积是2,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f4aad2e5282f87f561e6aa91d0a32a.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285a04d38a5e0b09931450aa18713f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6441085e4c4d03fa52d147391e0db1f.png)
(3)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4489d9b83072184c0e1d6b09be50ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4489d9b83072184c0e1d6b09be50ca.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/81dea63b8ce3e51adf66cf7b9982a248.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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|
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3卷引用:上海市建平中学2023届高三下学期3月月考数学试题
名校
5 . 已知椭圆
和双曲线
的焦距相同,且椭圆
经过点
,椭圆
的左、右顶点分别为
、
,动点
在椭圆
上且异于点
、
,直线
、
与直线
分别交于点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/2d29178f-3cb2-4e27-a414-bdc8d7011d0b.png?resizew=273)
(1)求椭圆
的标准方程;
(2)求线段
长的最小值;
(3)如图,设直线
与
轴交于点
,过点
作直线交椭圆与
、
,直线
与
交于一点
,证明:点
在一条定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acca1c00ee33a8d7aabf1d626541259e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e454c7161999e2a67138869f59d319b.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/dad2a36927223bd70f426ba06aea4b45.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261e2ccfee2e4df6e1f2021de5da27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/17/2d29178f-3cb2-4e27-a414-bdc8d7011d0b.png?resizew=273)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)如图,设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261e2ccfee2e4df6e1f2021de5da27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a477603f3f88c3b48352b6130f9ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
解题方法
6 . 已知平面直角坐标系内一椭圆
,记两焦点分别为
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/dba55a1c-cad2-410b-a6eb-59023ff8e17b.png?resizew=222)
(1)求
的方程;
(2)设
上有三点
、
、S,直线
、
分别过
,
,连接
.
①若
,求
的面积;
②证明:当
面积最大时,
必定经过
的某个顶点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a5b087c270dfc3f5ac18ebbc07edf3.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/9efbe4a54a27dc48e3f52d6249bd1681.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/dba55a1c-cad2-410b-a6eb-59023ff8e17b.png?resizew=222)
(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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7b816eca15d4b7d060013df53edd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10109d34ef06c3e721fd2c7128c5b9ca.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/08cce6cac0fdd4b1a434af8bcaec8fef.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9380191d5128132ab5995d3f048d3539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd5d363ebeaa6de0ff830742643db4.png)
②证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd5d363ebeaa6de0ff830742643db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd5d363ebeaa6de0ff830742643db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2023-01-16更新
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1039次组卷
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2卷引用:上海市行知中学2022-2023学年高二下学期期中数学试题
名校
解题方法
7 . 已知椭圆
的左右焦点
分别是双曲线
的左右顶点,且椭圆
的上顶点到双曲线
的渐近线的距离为
.设
是第一象限内
上的一点,
的延长线分别交
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/2ffa22bf-6dad-481f-9be9-a83b70eb9487.png?resizew=260)
(1)求椭圆
的方程.
(2)求
面积的取值范围.
(3)设
分别为
的内切圆半径,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e48d1edbfb6a5a48f9a95551d1dbc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8360f854ef0a6def80ea77a31c6aa4a8.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/d83fb9ac8a18e78a4c56da79514b5ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d82387e48eafb286785a21a8d4150f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357e0872d9e98d662a780e7686de86ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/2ffa22bf-6dad-481f-9be9-a83b70eb9487.png?resizew=260)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7733784336d1592cfe38e6a629140ef0.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8543261a8e351eb95cdfebb001a3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b34c4ee627c99cb11403536328c06f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fd3d19b0c8b544d52b897ca30990b4.png)
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名校
解题方法
8 . 以
为焦点的椭圆
上有一动点M,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9bece414af7ecb2d796dc8a6f549e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6775dcbf66ca1d2f55514217498b2a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0c9cfe312930e6277eb0a47c461eab.png)
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2023-01-14更新
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1092次组卷
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5卷引用:上海市建平中学2022-2023学年高二上学期期末数学试题
上海市建平中学2022-2023学年高二上学期期末数学试题(已下线)核心考点03椭圆与双曲线(3)(已下线)专题20 椭圆-2黑龙江省大庆市大庆中学2022-2023学年高二下学期开学考试数学试题(已下线)3.1.2 椭圆的几何性质(1)
名校
解题方法
9 . 已知椭圆C:
的面积公式为
,若抛物线
上到焦点的距离为2的一点P在椭圆C:
上,则该椭圆面积的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30489cd9c57a2c6283e0fc36129728c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
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10 . 已知椭圆C:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
,
,
,
,
这四点中恰有三点在椭圆C上.
(2)点E是椭圆C上的一个动点,求
面积的最大值;
(3)过
的直线l交椭圆C于A、B两点,设直线l的斜率
,在x轴上是否存在一点
,使得以DA、DB为邻边的平行四边形为菱形?若存在,求实数m的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21b59d92c33a3b451d6cc13878c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29949b6603f30e3cda2a1af6de90f3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318f2f6154dc3463b88fe889a5403c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c41b2f7ca11db3aaea46c69286adbce.png)
(2)点E是椭圆C上的一个动点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48e42ce4fd7e6da946bf2b7b22200db.png)
(3)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72babd92b33b44fa45d0d559c03f617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349109e1d324c60a977c98bc30ec9973.png)
您最近一年使用:0次
2022-12-16更新
|
567次组卷
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2卷引用:上海市宝山区2023届高三上学期一模数学试题