解题方法
1 . 已知椭圆
过点
,且离心率为
.
(1)求椭圆C的方程;
(2)在y轴上是否存在点M,过点M的直线l交椭圆C于A,B两点,O为坐标原点,使得三角形
的面积
?若存在,求出点M的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea8a480a2fe03293cb8303da8837d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆C的方程;
(2)在y轴上是否存在点M,过点M的直线l交椭圆C于A,B两点,O为坐标原点,使得三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ec649ed1b1c5601ec9bd8d4c80a31e.png)
您最近一年使用:0次
解题方法
2 . 在平面直角坐标系xOy内,点(
)在椭圆E:
(a>0,b>0),椭圆E的离心率为
,直线l过左焦点F且与椭圆E交于A、B两点
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/276d037e-66d9-42d4-865f-920721639c0b.png?resizew=183)
(1)求椭圆E的标准方程;
(2)若动直线l与x轴不重合,在x轴上是否存在定点P,使得PF始终平分∠APB?若存在,请求出点P的坐标:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3dbec3b83d19038944f018b956cc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f392d61933568d27a27568c6298365bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/276d037e-66d9-42d4-865f-920721639c0b.png?resizew=183)
(1)求椭圆E的标准方程;
(2)若动直线l与x轴不重合,在x轴上是否存在定点P,使得PF始终平分∠APB?若存在,请求出点P的坐标:若不存在,请说明理由.
您最近一年使用:0次
名校
解题方法
3 . 已知椭圆
过点
,且离心率为
.
(1)求椭圆
的方程;
(2)已知点
是椭圆上的点,
是椭圆上位于直线
两侧的动点,当
运动时,满足
,试问直线
的斜率是否为定值?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/c43e2672d18661c61d312187046c0239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198c249705ffdee268cd836f382e3855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-02-27更新
|
431次组卷
|
2卷引用:2020届江西省赣州市高三上学期期末考试数学(理)试题
解题方法
4 . 已知椭圆
,
为椭圆
的右焦点,
为椭圆上一点,
的离心率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/d0a71a8a-5397-4321-8b4b-b65c0605a510.png?resizew=189)
(1)求椭圆
的标准方程;
(2)斜率为
的直线
过点
交椭圆
于
两点,线段
的中垂线交
轴于点
,试探究
是否为定值,如果是,请求出该定值;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/16e0a9fa53090c853a0ebf4d5efecda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/d0a71a8a-5397-4321-8b4b-b65c0605a510.png?resizew=189)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/c987142aad34adcd31a6eefd6608d1c1.png)
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
的离心率为
,点
在椭圆上.
(1)求椭圆
的方程;
(2)设
,过点
作直线
交椭圆
于不同于
的
两点,直线
的斜率分别为
,试问:
是否为定值?若是,求出定值,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e501efaf72113fc8ee3d495004fa980.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3325d357e4e3a160e6cc357cac2c1543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9404ad60dd25cb0df6c37032d50b72ce.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b27cee8fc7e91fd230544b1e85c45c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
2018-02-06更新
|
764次组卷
|
3卷引用:赣州市2017-2018年第一学期高三期末考试 数学(文)试题
14-15高二上·江西赣州·期末
解题方法
6 . 如图,椭圆
过点
,其左、右焦点分别为
,离心率
,M,N是直线x=4上的两个动点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/7bbdf286-b86b-4c41-a664-41fc84e85cf1.png?resizew=206)
(1)求椭圆的方程;
(2)求|MN|的最小值;
(3)以MN为直径的圆C是否过定点?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea21bc3f7c77a352c7afa862fc94db4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/6/7bbdf286-b86b-4c41-a664-41fc84e85cf1.png?resizew=206)
(1)求椭圆的方程;
(2)求|MN|的最小值;
(3)以MN为直径的圆C是否过定点?请证明你的结论.
您最近一年使用:0次