如图,已知椭圆
:
的一个焦点为F(1,0),且过点
.
(Ⅰ)求椭圆
的方程;
(Ⅱ)若
为垂直于
轴的动弦,直线
:
与
轴交于点
,直线
与
交于点
.求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8069a9bdb14169f9c91c06ea51c049c3.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
更新时间:2017-09-22 09:29:13
|
相似题推荐
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适中
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【推荐1】已知椭圆的焦点为
,该椭圆经过点P(5,2)
(1)求椭圆的标准方程;
(2)若椭圆上的点
满足
,求y0的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15289ba29a66a2a49c23f0408b588946.png)
(1)求椭圆的标准方程;
(2)若椭圆上的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b490e09248ea3242ec67afae8d00c18.png)
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适中
(0.65)
【推荐2】已知A,B,C是椭圆C:
(a>b>0)上的三点,其中点A的坐标为(2
,0),BC过椭圆的中心,且
·
=0,|
|=2|
|
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://img.xkw.com/dksih/QBM/2017/10/9/1791390529863680/1791819426988032/STEM/6bf47819ac834c8c8f26d1c76f4f6234.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2017/10/9/1791390529863680/1791819426988032/STEM/31a57c6fc43c47baae63606ee57aa161.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2017/10/9/1791390529863680/1791819426988032/STEM/d176705f0f5d481e8c1c24e8c1f32f9e.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2017/10/9/1791390529863680/1791819426988032/STEM/d176705f0f5d481e8c1c24e8c1f32f9e.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2017/10/9/1791390529863680/1791819426988032/STEM/31a57c6fc43c47baae63606ee57aa161.png?resizew=14)
(1)求椭圆C的方程;
(2)过点(0,t)的直线l(斜率存在)与椭圆C交于P,Q两点,设D为椭圆C与y轴负半轴的交点,且||=|
|,求实数t的取值范围.
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【推荐1】在平面直角坐标系
中,圆
的圆心为
.已知点
,且
为圆
上的动点,线段
的中垂线交
于点
.
(1)求点
的轨迹方程;
(2)设点
的轨迹为曲线
,若四边形
的四个顶点都在曲线
上,对角线
,
互相垂直并且它们的交点恰为点
,求四边形
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c66e89fbb623bba218b16b3672a79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fb572a6f07dcade5332bea766020f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77ce31833750a319b3c2db7837a110d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a354c472e3de0d03a4d288bb7b62a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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解答题-问答题
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适中
(0.65)
【推荐2】已知椭圆 C:
的焦距为2,且过点
,右焦点为
.设A,B 是C上的两个动点,线段 AB 的中点M 的横坐标为
,线段AB的中垂线交椭圆C于P,Q 两点.
![](https://img.xkw.com/dksih/QBM/2019/1/8/2114174017716224/2115668880334848/STEM/882ce8efa0f84711aebf51b7808de3e5.png?resizew=149)
(1)求椭圆 C 的方程;
(2)设M点纵坐标为m,求直线PQ的方程,并求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0e2297e289632ffc211bd20e2e772e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af441c6f6acee26489dfe6e417571f47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5743a3bf50e8146f519a7b4f32a958b5.png)
![](https://img.xkw.com/dksih/QBM/2019/1/8/2114174017716224/2115668880334848/STEM/882ce8efa0f84711aebf51b7808de3e5.png?resizew=149)
(1)求椭圆 C 的方程;
(2)设M点纵坐标为m,求直线PQ的方程,并求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85305c8feb276d4db3199e29b2e4761.png)
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