设椭圆C:
(
)的离心率为
,焦距为2,过右焦点F的直线l与椭圆交于A,B两点,点M(2,0),设直线MA与直线MB的斜率分别为k1,k2.
(1)求椭圆方程;
(2)当直线l垂直x轴时,k1与k2有何关系?
(3)随着直线l的变化,k1+k2是否为定值?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆方程;
(2)当直线l垂直x轴时,k1与k2有何关系?
(3)随着直线l的变化,k1+k2是否为定值?请说明理由.
更新时间:2021-08-23 20:23:36
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【推荐1】已知椭圆
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(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知椭圆
的中心在坐标原点,焦点在
轴上,左焦点为
,右顶点为
,短轴长为
,点
的坐标为
,
的面积为
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(1)求椭圆
的离心率;
(2)若椭圆过
,求椭圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18436f0e2391b0ab7537a566fc28204c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c0b4bf88663b0463f282a9550c1afb.png)
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(1)求椭圆
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【推荐1】已知椭圆C的中心坐标原点,F1、F2分别为它的左、右焦点,直线x=4为它的一条准线,又知椭圆C上存在点M使
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【推荐2】已知椭圆
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e67baac84cf5c95d06d50c36cab7c68.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
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【推荐1】如图,B,A是椭圆
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/c1a4dcd6-91a6-4a57-9487-26d51529bce4.png?resizew=201)
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【推荐1】已知
是椭圆
的右顶点,过点
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的直线
与椭圆
相交于
两点(点
在
轴的上方),直线
分别与直线
相交于
两点.当点
为椭圆
的上顶点时,
.
(1)求椭圆
的方程;
(2)若
,且
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的取值范围.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02f266bd253738e315e84231235f0d2.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6314aa6aef5177cfcc55e22060a04594.png)
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【推荐2】已知椭圆
:
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(1)求椭圆
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:
与椭圆
交于
、
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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