1 . 椭圆
的右焦点为
,过
作圆
的切线交
轴于点
,切点
为线段
的中点.
(1)求椭圆的方程;
(2)曲线
与椭圆交于四点,若这四个点都在同一个圆上,求此圆的圆心坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bda5b4d2df3a2373e72cb39b33ce85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef74c4299221a967507c6a179337581a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0064b3966f15d9b1754c251514b15909.png)
(1)求椭圆的方程;
(2)曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999d6123b771ecbc1fe861c5242865af.png)
您最近一年使用:0次
2017-12-22更新
|
458次组卷
|
2卷引用:广西贵港市2018届高三上学期12月联考数学(理)试题
名校
解题方法
2 . 已知椭圆方程
为:
,
椭圆的右焦点为
,离心率为
,直线
:
与椭圆
相交于
、
两点,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a03fd02ebf5d4da6dbbe0765d39acc2.png)
(1)椭圆的方程及求
的面积;
(2)在椭圆上是否存在一点
,使
为平行四边形,若存在,求出
的取值范围,若不存在说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.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/3a03fd02ebf5d4da6dbbe0765d39acc2.png)
(1)椭圆的方程及求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(2)在椭圆上是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f645d4b09fba53f971172cd2602c691.png)
您最近一年使用:0次
3 . 已知椭圆
的离心率为
,
为椭圆的左右焦点,
为椭圆短轴的端点,
的面积为2.
(1)求椭圆
的方程;
(2)设
为原点,若点
在椭圆
上,点
在直线
上,且
,试判断直线
与圆
的位置关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e8e4c7dc8f333aa38dc8d69673c545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
您最近一年使用:0次
2017-09-23更新
|
1180次组卷
|
3卷引用:广西桂林市柳州市2018年届高三综合模拟金卷(1)理科数学试题
4 . 已知椭圆
的中心在原点,焦点在
轴上,离心率
.以两个焦点和短轴的两个端点为顶点的四边形的周长为8,面积为
.
(1)求椭圆
的方程;
(2)若点
为椭圆
上一点,直线
的方程为
,求证:直线
与椭圆
有且只有一个公共点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1deffc7d8a12eaa0d5712391939e8fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22aca721b36705d3e16ae69c194d3380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2017-05-21更新
|
348次组卷
|
5卷引用:广西桂林,百色,梧州,北海,崇左五市2017届高三5月联合模拟数学(文)试题
名校
解题方法
5 . 已知椭圆
的焦点在
轴上,且椭圆
的焦距为2.
(1)求椭圆
的标准方程;
(2)过点
的直线
与椭圆
交于两点
,过
作
轴且与椭圆
交于另一点
,
为椭圆
的右焦点,求证:三点
在同一条直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1acaf000c26b41cf9f713b1c277a5d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdc4ee19cf94ff2a061568be369ebed.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0522607eeb42a499c0f5b040bbdd42e5.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f368e25e5961993ea7c561bd5a9229fa.png)
您最近一年使用:0次
2017-05-11更新
|
597次组卷
|
5卷引用:广西桂林市第十八中学2017届高三下学期适应性考试数学(文)试题
解题方法
6 . 已知椭圆
:
的左焦点为
,其左、右顶点为A、
,椭圆与
轴正半轴的交点为
,
的外接圆的圆心
在直线
上.
(1)求椭圆
的方程;
(2)已知直线
:
,
是椭圆
上的动点,
,垂足为
,是否存在点
,使得
为等腰三角形?若存在,求出点
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8786952e5a4172e7217a8c2cb9f9c95b.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a0c85deb80d8e63bc60127e803f7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aaa597a5aa6176863eda3fdf83e181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d9da11b6082b4bc914e43a277afad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c45e863fc09ca35db66c72d3277ccb.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/ecfb02e157819a2bdd0f2790cbc825e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
名校
解题方法
7 . 已知椭圆
的离心率为
是
上一点.
(1)求椭圆
的方程;
(2)设
是
分别关于两坐标轴及坐标原点的对称点,平行于
的直线
交
于异于
的两点
.点
关于原点的对称点为
.证明:直线
与
轴围成的三角形是等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58581fc03754c4b1d3b840fd12672c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9caa765f12913130e88986b882baee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec462aff18b1a7c321f12c490a9a982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f23fe618a0767b22a866d88debbc985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85dc18a16a5e136f2f2022d3cbed6776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479abb0ae11055d1bd948b7fb40dbfea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
2016-12-13更新
|
1758次组卷
|
8卷引用:2016届广西柳州高中高三4月高考模拟文科数学试卷
8 . 已知中心在原点、焦点在
轴上的椭圆
上点到两焦点的距离最大值和最小值的差为
,且椭圆过点
,单位圆
的切线
与椭圆
相交于
,
两点.
(1)求椭圆
的方程;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ada8f10b58cd3b5a2c07b22463e692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a174f6a4ce98ca5c3e583866afdef2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81574a3738c0a314293ff7c74248971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa5694373bd78b1ca2180f831bf1c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2252dec4cf2fd59caff617269567806.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291bf769ae4f6c912ccd78bf4b23010c.png)
您最近一年使用:0次
2016-12-04更新
|
245次组卷
|
2卷引用:2016届广西自治区桂林柳州高考压轴文科数学试卷
2013·广西·一模
解题方法
9 . 已知离心率为
的椭圆
上的点到左焦点
的最长距离为
.
![](https://img.xkw.com/dksih/QBM/2013/6/3/1571237661237248/1571237667102720/STEM/ff2aa8c5-ce3a-4b7b-bf42-6b0808ce2385.png?resizew=335)
(Ⅰ)求椭圆的方程;
(Ⅱ)如图,过椭圆的左焦点
任作一条与两坐标轴都不垂直的弦
,若点
在
轴上,且使得
为
的一条内角平分线,则称点
为该椭圆的“左特征点”,求椭圆的“左特征点”
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2c435cd404239eba4f825bfdccb63a.png)
![](https://img.xkw.com/dksih/QBM/2013/6/3/1571237661237248/1571237667102720/STEM/ff2aa8c5-ce3a-4b7b-bf42-6b0808ce2385.png?resizew=335)
(Ⅰ)求椭圆的方程;
(Ⅱ)如图,过椭圆的左焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/050a400ef5900c4a69b4d3270b0b4ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b0825148d544af2a7b20bdc9ea7d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
10 . 已知椭圆
:
的右焦点为
,左顶点到点
的距离为
.
(1)求椭圆
的方程;
(2)设过点
,斜率为
的直线
与椭圆
交于
两点,且与短轴交于点
.若
与
的面积相等,求直线
的方程.
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/862401df76ed46809aaef188dfd38e7b.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/af103d3696924fe4a89c53a86f1004b7.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/fa4fe0e0d42a42d0a1e16e3e885da773.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/afb8ee5cc6334bafb91a8e8e16831bfa.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/8efc592fec5e4d7a9551619330d07155.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/862401df76ed46809aaef188dfd38e7b.png)
(2)设过点
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/afb8ee5cc6334bafb91a8e8e16831bfa.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/873e8dfc078e4ae7963c79814cd72101.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/ad768f0fd2594b0b88748db96eb1c8cd.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/862401df76ed46809aaef188dfd38e7b.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/7737d82edbf448e7ba37555df2890a0b.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/c11df5fd45f947bd8b195d04b483ca1d.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/1159c2ac215d4bf99c686b4a27c106b7.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/ada8b7340cc34921bddb59e0c6c7330c.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984835874816/1572984841781248/STEM/ad768f0fd2594b0b88748db96eb1c8cd.png)
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