1 . 平面直角坐标系
中,已知椭圆
的离心率为
,且点
在椭圆
上.椭圆
的左顶点为
.
(1)求椭圆
的标准方程;
(2)过点
作直线
与椭圆
交于另一点
.若直线
交
轴于点
,且
,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e454c7161999e2a67138869f59d319b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ff26eeabfaef6e944082999e39e814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2 . 如图,在平面直角坐标系
中,已知椭圆
的离心率为
,右准线
,过椭圆的右焦点F作
轴的垂线
,椭圆的切线
与直线
分别交于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/59667693-8c1d-420b-904e-c27031ed6e9f.png?resizew=165)
(1)求椭圆的标准方程;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36732e8672233f301617f56e633e7166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7e9d0e80d06d85627b9dca9e2aba1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaba77dcaf5c25fef9d6efa4037ec38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b620fda5b9d9cb945843ed433a5670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/59667693-8c1d-420b-904e-c27031ed6e9f.png?resizew=165)
(1)求椭圆的标准方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf557663f0be81c3e5f0e294b637031.png)
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3 . 如图,在平面直角坐标系xOy中,椭圆
过点
,
,其中e为椭圆的离心率,过定点
的动直线l与椭圆交于A,B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/eec5c8c1-e652-4624-b046-ee8023333f18.png?resizew=199)
求椭圆的方程;
设椭圆的右准线与x轴的交点为M,若
总成立,求m的值;
是否存在定点
其中
,使得
总成立?如果存在,求出点M的坐标
用m表示
;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5787b3d4d9ab6aad4c73a35993e1ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf992e9fc9d23664f7a7b3cd6fbe906f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec9ca77200280c2696202517ef88067.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/eec5c8c1-e652-4624-b046-ee8023333f18.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4256bbfa8f3be744a77598a133fe52e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec61d2179863351bfae4e3e8a49cf41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d61c6ddf6afa7d78122fe57df96ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1609bd7022e34f5c4a5b9bc7a9cd87a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00674bab694988593ecbfb918fe9d60d.png)
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4 . 在平面直角坐标系xOy中,椭圆
的左,右焦点分别为
,
,上顶点为A,射线
交椭圆于
若
的面积为
,内角A为
,则椭圆的焦距为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78aa834961df10c8bc3c64615fb79f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2639ce6b7c38975bcbd7c2d9814da324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1086bf902062562c198032cbcbb7faf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f26a1fa02b66554d41b65249601610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe8dc472dade6cea6943164792ab532.png)
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5 . 已知椭圆C:
,过点
的直线l与椭圆C交于A,B两点,若A是线段PB的中点,则点A的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6810ef578830377c2d5371b90691c3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f375949ce2d912e67b446eb2bbdf0cc8.png)
您最近一年使用:0次
2019-03-04更新
|
359次组卷
|
2卷引用:【市级联考】江苏省泰州市2018-2019学年高二第一学期期末考试数学(理科)试题
6 . 已知椭圆
:
的离心率为
,且过点
,其右焦点为
.点
是椭圆
上异于长轴端点的任意一点,连接
并延长交椭圆
于点
,线段
的中点为
,
为坐标原点,且直线
与右准线
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/29c02533-6f57-4554-bc20-79a86e77f3eb.png?resizew=231)
(1)求椭圆
的标准方程;
(2)若
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0348e8cdd04a08e36cf940aa4bbd95b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573b136c2d9c85c05b310d269167497a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/29c02533-6f57-4554-bc20-79a86e77f3eb.png?resizew=231)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3561bb2abb12e76bf64e06392ddb07a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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