名校
1 . 已知
分别是椭圆
的长轴与短轴的一个端点,
分别是椭圆
的左、右焦点,
椭圆上的一点,
的周长为
.
(1)求椭圆
的方程;
(2)若
是圆
上任一点,过点作
椭圆
的切线,切点分别为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf83aeeb9c891373557f6d63956150a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09bd166805856186c7ec89ad599faa7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c283fb57b384c7bbe0911d37eb9cd714.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3835e6398d18d162afebc92cd2ae9a.png)
您最近一年使用:0次
2017-05-29更新
|
495次组卷
|
2卷引用:河南省实验中学2021-2022学年高三上学期11月月考数学理科试题
名校
解题方法
2 . 已知椭圆
过点
,顺次连接椭圆的四个顶点得到的四边形的面积为
,点
.
(1)求椭圆
的方程.
(2)已知点
,是椭圆
上的两点.
(ⅰ)若
,且
为等边三角形,求
的面积;
(ⅱ)若
,证明:
不可能为等边三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349e6276d5832267c881836fa038b6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed0325097927b92a6458bfbb0667b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f333263260646c494225db8a7476c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
2017-05-20更新
|
919次组卷
|
3卷引用:河南省豫北重点中学2017届高三4月联考数学(文)试题
3 . 已知椭圆
的离心率为
,左、右焦点分别为
、
,
是
上一点,
,且
.
(Ⅰ)求椭圆
的方程;
(Ⅱ)当过点
的动直线
与椭圆
相较于不同两点
,
时,在线段
上取点
,且
满足
,证明点
总在某定直线上,并求出该定直线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6b646abc8ee6b9c8558d898f2af4be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beadb7284f34f936c5ad32b1561b51d4.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)当过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8115c09f801cf0bb02293baef7bf137.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc21c15bdd843dc8c2dd29c2955d8fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2017-05-03更新
|
2463次组卷
|
4卷引用:【全国百强校】河南省郑州市第一中学2018届高三12月月考数学(文)试题
【全国百强校】河南省郑州市第一中学2018届高三12月月考数学(文)试题江西省抚州市临川区第一中学2017届高三4月模拟检测数学(文)试题(已下线)专题12 定比点差法及其应用 微点4 调和点列中的定比点差法(已下线)第五篇 向量与几何 专题5 调和点列 微点3 调和点列(三)
解题方法
4 . 已知椭圆
的方程为
,左、右焦点分别为
,
,焦距为
,点
是椭圆
上一点,满足
,且
.
(1)求椭圆
的方程;
(2)过点
分别作直线
,
交椭圆
于
,
两点,设直线
,
的斜率分别为
,
,且
,求证:直线
过定点.
![](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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.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/74cb124db72beb3c98332cbade82ed86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08afe6f3d29b86c6b8780475c3f6fb62.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.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/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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/d717261ddfbfc489f945066ad5fdcb0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
5 . 已知曲线
的方程是
,且曲线
过点
两点,
为坐标原点.
(1)求曲线
的方程;
(2)设
是曲线
上两点,且
,求证:直线
恒与一个定圆相切.
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/f0b4b29278f046389e960224259b1be0.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/b0a5862e9cf74fcb88ea8942fce69263.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/f0b4b29278f046389e960224259b1be0.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/15d11f44b749457b912c7ac28a3e4c04.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/303bee23e95d401b93fe0d0f9abe9b2d.png)
(1)求曲线
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/f0b4b29278f046389e960224259b1be0.png)
(2)设
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/1f23e2e796af466ca8e8e28d3b36010e.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/f0b4b29278f046389e960224259b1be0.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/488b49dc4b194ab69bae355ee55dfe0f.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572791387758592/1572791393181696/STEM/e5200bd986e844b0b0ec3a23a7ab99d9.png)
您最近一年使用:0次
14-15高二上·湖南益阳·阶段练习
6 . 设
、
是椭圆
上的两点,已知向量
,
,若
且椭圆的离心率
,短轴长为
,
为坐标原点.
(1)求椭圆的方程;
(2)若直线
过椭圆的焦点
(
为半焦距),求直线
的斜率
的值;
(3)试问:
的面积是否为定值?如果是,请给予证明;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c9bebea391a1f9956dfcca98d9d1f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d02faad03bf6e39163e973121db5443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03857683a18d59f196ae443421db2904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169488d6e49c88d14e9d23419c255568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925752b294d622b2386a885ff67382bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)试问:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2016-12-03更新
|
892次组卷
|
6卷引用:河南省郑州市第一中学2018届高三上学期期中考试(理科)数学试题