已知椭圆
的左,右顶点分别为
,右焦点为
,点
是椭圆
上一动点(异于
)点
关于原点的对称点为
,连接
并延长交于点
连接
并延长交椭圆
于点
,记
面积分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41c06f7a2ef206fee2a35e11605a703.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f9bef690-066d-4403-9921-740a651b972f.png?resizew=253)
(1)当
点坐标为
时,求
的值;
(2)是否存在点
,使得
若存在,求出
点坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec503feb3748e8d4cc110b22d9b69a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e4e4c7a79d9d3cdb9ac5949d53e33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e4e4c7a79d9d3cdb9ac5949d53e33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eacd9c1ce5e65fec29c32f40d86b73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a795e2f16c6367ba95d4e1d5271698c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9eeee83b4b7c6ceac7828ff534ce15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6693d12e6886e068e6abb2443dfab058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41c06f7a2ef206fee2a35e11605a703.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/f9bef690-066d-4403-9921-740a651b972f.png?resizew=253)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e05dddcdd63768dfc33a4f313740d902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83532164d60d7fe2ffabb673c8f08cfa.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7d353cac91c10f40b7023b25061c9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
22-23高三上·江苏南通·阶段练习 查看更多[3]
(已下线)江苏省南通市如皋市2022-2023学年高三上学期教学质量调研(一)数学试题江苏省南京市第十三中学2022-2023学年高三上学期教学质量调研(一)数学试题(已下线)考向36 直线与圆锥曲线最全归纳(十六大经典题型)-1
更新时间:2022-10-10 20:25:50
|
相似题推荐
【推荐1】已知椭圆C:
1(a>b>0),其右焦点为F(1,0),离心率为
.
(Ⅰ)求椭圆C的方程;
(Ⅱ)过点F作倾斜角为α的直线l,与椭圆C交于P,Q两点.
(ⅰ)当
时,求△OPQ(O为坐标原点)的面积;
(ⅱ)随着α的变化,试猜想|PQ|的取值范围,并证明你的猜想.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22ecb9b0a87ab5098571bdf80441231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
(Ⅰ)求椭圆C的方程;
(Ⅱ)过点F作倾斜角为α的直线l,与椭圆C交于P,Q两点.
(ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396f7815a2c76a9c8f98e58335122d63.png)
(ⅱ)随着α的变化,试猜想|PQ|的取值范围,并证明你的猜想.
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【推荐2】已知椭圆E:
的离心率为
,P为椭圆E上一点,Q为圆
上一点,
的最大值为3(P,Q异于椭圆E的上下顶点).
![](https://img.xkw.com/dksih/QBM/2022/3/28/2946135755153408/2947907200778240/STEM/6ad34a35-8bea-452e-8287-4e3794171077.png?resizew=224)
(1)求椭圆E的方程;
(2)A为椭圆E的下顶点,直线AP,AQ的科率分别记为
,
,且
,求证:
APQ为直角三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef74c4299221a967507c6a179337581a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82358b724051b032c7ec734a226ae84.png)
![](https://img.xkw.com/dksih/QBM/2022/3/28/2946135755153408/2947907200778240/STEM/6ad34a35-8bea-452e-8287-4e3794171077.png?resizew=224)
(1)求椭圆E的方程;
(2)A为椭圆E的下顶点,直线AP,AQ的科率分别记为
![](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/a0aea8e4a6e524f43f9a13c1ef4fbddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
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解题方法
【推荐1】如图所示,直线
与椭圆
交于A、B两点,记
面积为S;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/ddaf9a64-97c4-4212-bbe3-5ce1e7aa297d.png?resizew=235)
(1)求在
,
的条件下S的最大值;
(2)当
,
,
时,求直线
的方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/ddaf9a64-97c4-4212-bbe3-5ce1e7aa297d.png?resizew=235)
(1)求在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a882037b9ce104ecc496e0f31a139361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e84dbb03e8c627ff11d5c7aeb0c8b5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5a64bcb77f5f64e4af6930c249a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7288d0b18af1a4be7f8df09af45df1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
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适中
(0.65)
解题方法
【推荐2】已知椭圆
:
过点
,且离心率为
,设
、
分别为椭圆的左右顶点,
、
为椭圆的左右焦点,点
为椭圆
上不同于
、
的任意一点,点
是椭圆
长轴上的不同于
、
的任意一点
(1)求椭圆
的标准方程;
(2)当
内切圆的面积最大时,求内切圆圆心的坐标;
(3)设直线
与椭圆
的另一个交点为点
,若
的值为定值,则称此时的点
为“稳定点”,问:是否存在这样的稳定点?若有,试求出所有“稳定点”,并说明理由;若没有,也请说明理由.
![](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/310f780f4f03699023b1322a1e002539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/acc290b44635265137fdf13146b6a6d9.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)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0942d7fa55cecd4b860946631d40ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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