1 . 已知焦点在
轴上的椭圆
,椭圆的左,右焦点分别为
,
,现将横轴的正半轴沿逆时针方向旋转,旋转后的直线与椭圆的交点为
,设旋转角为
,
,
.
(1)若
的取值范围为
,求
关于
的函数解析式,并写出在
的最值;
(2)记
,若
,且椭圆的离心率为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a30de57df4e6f60bffe9ac591b24fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8387b687579c4d5152175c9d19e24232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6966a0fd62e5d8f0584bbf6113fd13f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b69758c1446cc04c325ced322b6cdc.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da68a2f92870ff9b9ef5b9398822131c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b0146dd739a42cd3e0c01f55e9bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4f13b46d8b9f3a7f71c3b51531a7ae.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f62d1c3fda2a5b057b061b9c6c46dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/645ef71198fd32c315c1fd78443bb8f6.png)
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2023-12-16更新
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219次组卷
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2卷引用:上海市嘉定区2024届高三上学期质量调研数学试题