解题方法
1 . 已知命题
:方程
表示焦点在
轴上的椭圆;命题
:实数
使得不等式
成立.
(1)若
时,求命题
中的椭圆的离心率;
(2)求命题
是命题
的什么条件.
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/cd52f30d7c6c476c9597e44171d74cb1.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/bc361c9e4e98496bb5864567fccd6d04.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/d582857106234a4089e90250c731bb07.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/65c0aff40d33466d9e320f2203350c45.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/69ebfdde31964814bab5557029a23f5c.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/6cf36ee98f3e4a0b8bafe820fb2cc175.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/dea58fbd1ac4490094b6de9d2958bc31.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/cd52f30d7c6c476c9597e44171d74cb1.png)
(2)求命题
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/cd52f30d7c6c476c9597e44171d74cb1.png)
![](https://img.xkw.com/dksih/QBM/2016/1/27/1572467990872064/1572467996925952/STEM/65c0aff40d33466d9e320f2203350c45.png)
您最近一年使用:0次
解题方法
2 . 以椭圆
的左右焦点
为直径的圆若和椭圆有交点,则椭圆离心率的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知椭圆
与
轴,
轴的正半轴分别交于A,B两点,原点O到直线AB的距离为
该椭圆的离心率为
.
(1)求椭圆的方程
(2)是否存在过点P
的直线
与椭圆交于M,N两个不同的点,使
成立?若存在,求出
的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea6e972ea53db1c69eb100623f22a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆的方程
(2)是否存在过点P
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f5ffdaf0ff52182270424727e23354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc388f35a38f18916f3e09e285fc70f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2016-12-04更新
|
344次组卷
|
3卷引用:福建省龙岩二中2018-2019学年高二上学期期中考试数学(理)试题
名校
4 . 已知焦点在x轴上的椭圆过点
,且离心率
,则椭圆的标准方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee80939187a84e1863eeb192a301c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bbe873760a74d9aedaafc98fe7e83c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
219次组卷
|
4卷引用:2015-2016学年福建省南安一中高二上学期期末考试文科数学试卷
12-13高二上·福建三明·期末
5 . 已知椭圆
(a>b>0)的离心率
为该椭圆上一点,
(I)求椭圆的方程.
(II)过点
作直线l与椭圆c相交于
点,若以
为直径的圆经原点
,求直线
的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/240d5f7d05dafef0e2c26e1656594726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c750c844ebf0ef179f86ef108d212ba.png)
(I)求椭圆的方程.
(II)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149ee9d2da588990c54ec5199ad221ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
6 . 在极坐标系中,已知某曲线
的极坐标方程为
,直线
的极坐标方程为
.
(1)求该曲线
的直角坐标系方程及离心率
;
(2)已知点
为曲线
上的动点,求点
到直线
的距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c1d53ba42beb3b47a668e2f685799ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/210531aa78d8d789616343fa18b36161.png)
(1)求该曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(2)已知点
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
7 . 已知椭圆
的内接
的顶点
为短轴的一个端点,右焦点
,线段
中点为
,且
,则椭圆离心率的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f232cf21b241f3112c2697151e0fcdd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10-11高二下·福建·阶段练习
8 . 已知椭圆
的焦点
,短轴长为8,离心率为
,过
的直线交椭圆于A、B两点,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a9db3b2fef0dec32665bd83885fd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e56b5cbcf69756792fc934bcc20cb.png)
A.10 | B.20 | C.30 | D.40 |
您最近一年使用:0次
9 . 已知椭圆
(
)的离心率为
,短轴的一个端点为
.过椭圆左顶点
的直线
与椭圆的另一交点为
.
(1)求椭圆的方程;
(2)若
与直线
交于点
,求
的值;
(3)若
,求直线
的倾斜角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25e326fdf9e5456f48e8a99a069f379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求椭圆的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07452f7f2cb926d8209ea0d06a38267.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ad7e0e730caaebab54e28873c38543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2016-12-04更新
|
175次组卷
|
4卷引用:2015-2016学年福建省四地六校高二下学期第一次联考文科数学试卷