已知双曲线
的右焦点为
,直线
与双曲线
的渐近线在第一象限的交点为点
,坐标原点为
,
的面积为
,则双曲线
的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6fe0f38ab3095ac6575faa02914b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2290f7912c9a6bfd39ec271f5672f6f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e55b85a1dc91ee8a026ad44e82d42b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cc0b4997cae4d8aec791a1d3923314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.2 | C.![]() | D.3 |
更新时间:2020-04-22 21:45:10
|
【知识点】 求双曲线的离心率或离心率的取值范围
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单选题
|
适中
(0.65)
名校
解题方法
【推荐1】已知双曲线C:
的右焦点为F,过F作直线分别与双曲线的两渐近线相交于A、B两点,且
,
,则该双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c357c92c354076ff4b9d9b3da0044fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26bb3a0cefd6d2c7e136a699d01d1985.png)
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】已知双曲线C:
的右焦点为F,O为坐标原点.以F为圆心,OF为半径作圆F,圆F与C的渐近线交于异于O的A,B两点.若|AB|
|OF|,则C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1bfd9898f404ebc7384d637feaa881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ada26e9b7fe22be819d675f72e086ee.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次