名校
1 . 已知曲线
是中心在原点,焦点在
轴上的双曲线的右支,它的离心率刚好是其对应双曲线的实轴长,且一条渐近线方程是
,线段
是过曲线
右焦点
的一条弦,
是弦
的中点.
(1)求曲线
的方程;
(2)求点
到
轴距离的最小值;
(3)若作出直线
,
使点
在直线
上的射影
满足
.当点
在曲线
上运动时,求
的取值范围.
【参考公式:若
为双曲线
右支上的点,
为右焦点,则
.(
为离心率)】
![](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/f52d9442f3cd10bb39e1194cb716e2be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)若作出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d633902806f9800785a2f2cf95fb8cde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90863129d5baaa248ce1518f4f1cd79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9fdd02a947c11110494819c65465220.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/36a1b09c653185842513e24ebba60bb3.png)
【参考公式:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1967bda05c3e6b4e19c277793572bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cacafead1e542b5fea3daea65ffb73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71461effad1a94788de05e0b60a55893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
您最近一年使用:0次