2021·上海奉贤·二模
1 . 曲线
与曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb8742324ca04e5c5f9a2e92e240e9.png)
在第一象限的交点为
.曲线
是
(
)和
(
)组成的封闭图形.曲线
与
轴的左交点为
、右交点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c62720f8-b060-4076-8cd6-90cba74a716d.png?resizew=241)
(1)设曲线
与曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb8742324ca04e5c5f9a2e92e240e9.png)
具有相同的一个焦点
,求线段
的方程;
(2)在(1)的条件下,曲线
上存在多少个点
,使得
,请说明理由.
(3)设过原点
的直线
与以![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928d1325e0f48501a6e1680b814eb0f7.png)
为圆心的圆相切,其中圆的半径小于1,切点为
.直线
与曲线
在第一象限的两个交点为
.
.当
对任意直线
恒成立,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7261298d9edd1d9a75eb9aeb1e686ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb8742324ca04e5c5f9a2e92e240e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9cd3690e7aa3debb1ed054a9f622da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7261298d9edd1d9a75eb9aeb1e686ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a254a2539e3fddd2ed1e11fe17ef48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb8742324ca04e5c5f9a2e92e240e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dee41282d614039c13dcdc6d71f65e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c62720f8-b060-4076-8cd6-90cba74a716d.png?resizew=241)
(1)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7261298d9edd1d9a75eb9aeb1e686ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fb8742324ca04e5c5f9a2e92e240e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9cd3690e7aa3debb1ed054a9f622da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)在(1)的条件下,曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc916165b2d9891d60c235da991182d6.png)
(3)设过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928d1325e0f48501a6e1680b814eb0f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cea72e0c37257bcfd85a59ef8dd0f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc37ebff7b12c6b1a6aedb68206a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2021-05-11更新
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4卷引用:上海市华东师范大学第二附属中学2021-2022学年高二上学期期末数学试题
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