已知椭圆M的对称轴为坐标轴,抛物线y2=4x的焦点F是椭圆M的一个焦点,且椭圆M的离心率为
.
(1)求椭圆M的方程;
(2)已知直线y=x+m与椭圆M交于A,B两点,且椭圆M上存在点P,满足
=
+
,求m的值.
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533230354432/1572533236047872/STEM/9fc675a4f74f4adb997a59639d1d68a3.png)
(1)求椭圆M的方程;
(2)已知直线y=x+m与椭圆M交于A,B两点,且椭圆M上存在点P,满足
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533230354432/1572533236047872/STEM/25278890be0541c49acd79f6aaa3a3e3.png)
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533230354432/1572533236047872/STEM/33acd8926d64491e8283afdd58c8106b.png)
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533230354432/1572533236047872/STEM/904ffd8806c94580b14c281b2d3dafc4.png)
更新时间:2016-12-04 03:49:58
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【知识点】 椭圆
相似题推荐
【推荐1】在平面直角坐标系中,圆O交x轴于点F1,F2,交y轴于点B1,B2.以B1,B2为顶点,F1,F2分别为左、右焦点的椭圆E,恰好经过点
.
(1)求椭圆E的标准方程;
(2)设经过点(﹣2,0)的直线l与椭圆E交于M,N两点,求△F2MN面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e9ca197ac13a116c18abb983a12825.png)
(1)求椭圆E的标准方程;
(2)设经过点(﹣2,0)的直线l与椭圆E交于M,N两点,求△F2MN面积的最大值.
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解答题-问答题
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较难
(0.4)
【推荐2】已知椭圆
:
的离心率为
,且过定点
.
(1)求椭圆
的方程;
(2)已知直线
与椭圆
交于
两点,试问在
轴上是否存在定点
,使得以弦
为直径的圆恒过点
?若存在,求出点
的坐标和
的面积的最大值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb223b8777ab973970491bf0dcc6806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261ca562ba1c9f5595b08eae6f40ce20.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e503a4ad72bc3a3a6d266196e6dbee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
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