双曲线
的左、右焦点分别为
为坐标原点,
为双曲线右支上的一点,连接
交左支于点
.若
,且
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447120a38d5e15d7a01d36231d648d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894cacd6074e9a1bf5d7e6c070288b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276f7df412949f125dd474322d4bb4.png)
A.2 | B.![]() | C.3 | D.![]() |
更新时间:2024-05-22 21:50:54
|
相似题推荐
单选题
|
适中
(0.65)
解题方法
【推荐1】在
中,
,
,
为边
的三等分点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9541b233e419ab5877c5a8406288762b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b4486503d7ef4389c6954d0db48a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b08895d449fc3930fb50c0fa5c2f072.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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名校
解题方法
【推荐2】以等腰直角三角形
的斜边
上的高
为折痕,将
折起,使折起后的
恰成等边三角形,
为
的中点,则直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
解题方法
【推荐1】已知
为双曲线
的两个焦点,
为双曲线右支上的动点(非顶点),则
的内切圆恒过定点( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffae66a14b5574dbf030591cd7d43939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
A.![]() | B.![]() | C.![]() | 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
分别是双曲线
的左、右焦点,
为双曲线右支上一点,若
,
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb86da8f9c68744a5910726a175f295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec3b65b15a00a00de359ddf88796510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1902167c21e5800007084c3692d613e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d308a897ffc8bfaf4acdfbb28d40d4f1.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
单选题
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适中
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名校
【推荐1】设
,
是双曲线
:
的左、右焦点,以线段
为直径的圆与直线
在第一象限交于点
,若
,则双曲线
的离心率为( )
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712407894810624/2716597458649088/STEM/1cf4c9ae-407b-4630-a942-b3fcefcb5320.png?resizew=241)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5073552dadf6b05b65dabb17aef220a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304f558f129844201c271a344a0aa072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712407894810624/2716597458649088/STEM/1cf4c9ae-407b-4630-a942-b3fcefcb5320.png?resizew=241)
A.![]() | B.![]() |
C.![]() | D.2 |
您最近一年使用:0次
单选题
|
适中
(0.65)
解题方法
【推荐2】
是双曲线
)的左右焦点,过
作垂直于
轴的直线交双曲线于
两点,若
,则双曲线的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adda13780372840f0fdae532e8a557e2.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次