1 . 已知
,
分别是椭圆
的左,右焦点,
是椭圆
上一点,
的角平分线与
的交点
恰好在
轴上,则线段
的长度为( )
![](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/279cefeb5c389a37a71e5fd3925f5954.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/7fa5a13947cff38d6380e19489c282bc.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 直线
的倾斜角的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b06b2df5730134c01f466c7da1da47.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 直线
交曲线
于点A,B,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7214d447ca24b48ca9ca2c97377de2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f925b9e739005626dd534736790c338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 已知离心率为
的双曲线
与x轴交于A,B两点,B在A的右侧.在E上任取一点
,过点B作直线QB垂直PA交于点Q,直线PB、QA分别交y轴于不同的两点M,N.
(1)求双曲线E的方程;
(2)求证:直线
与直线
的斜率乘积为定值;
(3)三角形MNB的外接圆是否过x轴上除B点之外的定点,若是,求出该定点坐标:若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9c7f26c2b768d5bae9fc062d431348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2dde6ab3c91e54f052de132494a5e5.png)
(1)求双曲线E的方程;
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(3)三角形MNB的外接圆是否过x轴上除B点之外的定点,若是,求出该定点坐标:若不是,请说明理由.
您最近一年使用:0次
5 . 直线
的倾斜角是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857f5e7c24364ed4b52896bd1b12d453.png)
您最近一年使用:0次
6 . 直线
的倾斜角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4f3ea707431e69ce7f67f20b09c5ae.png)
A.0 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 已知直线
:
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695a98262ce07847698bbf60e05d434d.png)
A.直线![]() ![]() |
B.原点![]() ![]() ![]() |
C.若点![]() ![]() ![]() ![]() |
D.若直线![]() ![]() |
您最近一年使用:0次
8 . 已知直线
,下列命题中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0046dc83bc343254b7b3bb6fd7e09db9.png)
A.若![]() ![]() | B.若![]() ![]() ![]() |
C.原点到直线![]() ![]() | D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知点
在直线
,点
在直线
上,且
,
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/793894c733026e3f5900b31538fcb731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be9a7157db756c4536495e5698cf405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2dff006a89ed43e44492206e8516e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6fcccae408f4eddb35ca248434c5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186ae4baa81c268590b50e26cc0c3158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32650ade9b0aa92b658a939e5665d801.png)
A.![]() | B.![]() | C.![]() | D.5 |
您最近一年使用:0次