名校
解题方法
1 . 如图所示,由半椭圆
和两个半圆
、
组成曲线
,其中点
依次为
的左、右顶点,点
为
的下顶点,点
依次为
的左、右焦点.若点
分别为曲线
的圆心.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/ead0b4aa-035a-461b-8fa8-846ac684efd7.png?resizew=183)
(1)求
的方程;
(2)若过点
作两条平行线
分别与
和
交与
和
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6939602e243cd5662d60d8b53d2d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1cbad6f9e495834f0920e63c0351f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f026d5938eb00a18e9933312b9008a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d96e79ed6d14cb6fc736bcc8fee01d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44bdbbfae10ee2d7c2ddf447e481af9e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/ead0b4aa-035a-461b-8fa8-846ac684efd7.png?resizew=183)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8add39d0693fd42ebe2fbadb601c47ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1f941c5390ea8f60ec7c27cf3eb41b.png)
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆
的左、右焦点分别为
,离心率为
,过左焦点
的直线
与椭圆
交于
两点(
不在
轴上),
的周长为
.
(1)求椭圆
的标准方程;
(2)若点
在椭圆
上,且
为坐标原点),求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453ea8f3a2b85526b54bf453871c3820.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/0c8d68257ba90d0b05303d8d4a7bae33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2afc87067a2c8ee603eb8903bac424a.png)
您最近一年使用:0次
2023-02-14更新
|
664次组卷
|
7卷引用:宁夏中卫市2023届高三二模数学(理)试题