名校
解题方法
1 . 已知函数
,
.
(1)若
在
上恒成立,求k的取值范围;
(2)设
为
图象上一点,
为
图象上一点,O为坐标原点,若∠AOB为锐角,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf266c400ec9f20afcdb1c76a62c6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27bcb0a5f3d22e9df052879fb0d0d4d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc1df6dfa5bb84b0f213a00a11d1a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb2a536197b222df8b10a4c453f05f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eae6fbe53a949c340ddcc6d3067f068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ca0e0b071265e90852d22ef88de865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773c2bb351fa6cfcf69ad75b63395cbe.png)
您最近一年使用:0次
2023-04-15更新
|
253次组卷
|
2卷引用:湖南省郴州市2022-2023学年高二下学期期中数学试题
解题方法
2 . 已知椭圆方程为
,过椭圆的
的焦点
分别做
轴的垂线与椭圆交于四点,依次连接这四个点所得的四边形恰好为正方形.
(1)求该椭圆
的离心率.
(2)若椭圆
的顶点恰好是双曲线
焦点,椭圆
的焦点恰好是双曲线
顶点,设椭圆
的焦点
,双曲线
的焦点
为
与
的一个公共点,记
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.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/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求该椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e70ab7d7307661b15ad4e2162181e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d16e69e3f199e997ef40e321fb945a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46cc87319efe1341a3d5e66b2a9e261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90c37a58bb4575a7bb223c3ab776163.png)
您最近一年使用:0次