已知椭圆
的离心率为
,点
分别为其下顶点和右焦点,坐标原点为
,且
的面积为
.
的方程;
(2)是否存在直线
,使得
与椭圆
相交于
两点,且点
恰为
的垂心?若存在,求直线
的方程,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14aeac55d519010de23642ac22cfb0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)是否存在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14b86b8bf99386fc939c9c12b1355ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
2021·河南洛阳·二模 查看更多[5]
河南省洛阳市2021届高三二模数学(理)试题福建省厦门外国语学校2021届高三5月高考适应性考试数学试题(已下线)NO.4 练悟专区——解答题突破练-2022年高考数学二轮复习讲练测(新教材·新高考地区专用)(已下线)专题24 圆锥曲线中的存在性、探索性问题 微点1 圆锥曲线中的存在性问题辽宁省沈阳市第一二〇中学2023-2024学年高三第十次质量监测(最后一卷)数学试题
更新时间:2021-05-14 19:08:34
|
相似题推荐
【推荐1】已知椭圆
四个顶点形成的四边形为菱形,它的边长为
,面积为
,过椭圆左焦点
与椭圆C相交于M,N两点(M,N两点不在x轴上),直线l的方程为:
,过点M作
垂直于直线l交于点E.
(1)求椭圆C的标准方程;
(2)点O为坐标原点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea2daf001c7c7e402bfd4ce7f5ba791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b3a099c4fbb7645f63e639ccf68ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba8f8a48c8da8296e65a2d0ccac62d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82fe25db889399bb3ca4ffd5dd5db84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58371691877e9d14d9f465f2792ee927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
(1)求椭圆C的标准方程;
(2)点O为坐标原点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5134013b324dc594c62e6079a5fbdcab.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知椭圆
的左、右焦点分别为
,其离心率
,点
为椭圆上的一个动点,△
面积的最大值为
.
(1)求椭圆的标准方程;
(2)若
是椭圆上不重合的四个点,
与
相交于点
,
求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/8b18aa2cb00f48f9b07e08f95c5a7eb4.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/35a8d8722a2c45e381edf38e1d04b0db.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/bd1983b94080471f997f67f62f67ec84.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/4daebf2428ac49e78baf851ceaaaa17c.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/e171b3039e894958b26754f01474897e.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/66b70394196f46c8a6546f3bc5f4f6d2.png)
(1)求椭圆的标准方程;
(2)若
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/85e87f94c81c41888657b71df04ed8ce.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/5498f205fc4747cf861c87861287c446.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/ed42fa9b1a364ef7b43f435729af6482.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/b642358fc7cf4d9faef4df60a33b86f2.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/7672b9fa1c0643ddb900cb55c6c706dd.png)
![](https://img.xkw.com/dksih/QBM/2016/10/25/1826273179131904/1826273179164672/STEM/0150b6e0fa864b0bbfc794c7e9d01900.png)
您最近一年使用:0次
【推荐1】如图所示,在平面直角坐标系
中,椭圆
的中心在原点,点
在椭圆
上,且离心率为
.
(1)求椭圆
的标准方程;
(2)动直线
交椭圆
于
,
两点,
是椭圆
上一点,直线
的斜率为
,且
,
是线段
上一点,圆
的半径为
,且
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a7a78a0cb55d2396f7213432a86b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9748af80ebfc2e8162d93fd7be09f092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a350d44bf2b7ddfbfe23c754efa9c8d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3feb51b55f54b7160f9c218b8d3b17c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981f1ebc418a7d8536594fc62baa0074.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/8c6dae52-e08f-47f5-8b35-3d77285707d9.png?resizew=189)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐2】已知椭圆
的长轴长与短半轴长之比为
,且点
在椭圆C上.
(1)求椭圆C的方程;
(2)直线
与x轴,椭圆C依次相交于
三点,点M为线段
上的一点,若
,求
(O为坐标原点)面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c3c738a7717513105839240bf59a09.png)
(1)求椭圆C的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00bc275f025db674857c64d17a3de46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8ec66d29e434a5eb44f03c58683354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d052022c006994f281414c331d0e1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c693731f073a4f21f0c92a3b610804f4.png)
您最近一年使用:0次