如图,直线
与椭圆
相交于
两点,且
的中点为
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/58bef9ba-6112-4a62-90ae-967d3fcdf9b3.png?resizew=347)
(1)求椭圆的离心率;
(2)若直线
与椭圆相交于
两点,求证:
四点在同一个圆上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec70c15635634679ad4eaccb619df5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bea681006f614f8a070e9c6a942c04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/58bef9ba-6112-4a62-90ae-967d3fcdf9b3.png?resizew=347)
(1)求椭圆的离心率;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73aa23d5bae655a13ecad8f97505dbe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff2b0577c462dc522d573cb3ef9374c.png)
更新时间:2022-07-03 17:25:47
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相似题推荐
解答题-问答题
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【推荐1】已知椭圆
:
.
(1)求椭圆
的离心率;
(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://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/13fb9823a6db4ae8a539266742857113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2c17fca5d9b70a31a66e791d830163.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/13fb9823a6db4ae8a539266742857113.png)
(2)设
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/0f401ed7508f4b34aecc95c499442ef2.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/12776267ac5e4f2abbf01d18168119e4.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/13fb9823a6db4ae8a539266742857113.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/b79ed6e8c94a4f31bf94f241017938ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada5c15d7b42b2fb2836c3478ae5fb34.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/0615720cbe5740c1b979453bbc3bd460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
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【推荐2】已知椭圆C:
的焦点在x轴上,且经过点
,左顶点为D,右焦点为F.
(1)求椭圆C的离心率和
的面积;
(2)已知直线
与椭圆C交于A,B两点.过点B作直线
的垂线,垂足为G.判断直线
是否与y轴交于定点?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92128c8815407943c0368bc96c992287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a568bdaa64ed99d2e9ca41d92208cb68.png)
(1)求椭圆C的离心率和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de72a5190834f5dbe895596656c038b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
您最近一年使用:0次
【推荐1】已知椭圆
的右焦点为
,且椭圆
过点
.
(1)求椭圆
的标准方程;
(2)过椭圆
左焦点
的直线
与椭圆
交于A,B两点,直线
,过点
作直线
的垂线,与直线
交于点
,求
的最小值和此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df040d0c13f4c5a3c5fe8176197456be.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/e23a17a4f6af9cdd1455190ce90492b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624d4c807e0ac28633d5a3fdfce012b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐2】已知椭圆G:
,与x轴不重合的直线l经过左焦点
,且与椭圆G相交于A,B两点,弦AB的中点为M,直线OM与椭圆G相交于C,D两点.
(1)若直线l的斜率为1,求直线OM的斜率;
(2)是否存在直线l,使得
成立?若存在,求出直线l的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(1)若直线l的斜率为1,求直线OM的斜率;
(2)是否存在直线l,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3148c263984dacc8b68cc3d374fbbeee.png)
您最近一年使用:0次