解题方法
1 . 已知抛物线
经过点
和
,过点
作直线
的垂线,垂足为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818eb485414c5c5f30c15956f4805025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6027b342e8128f241c542f273e51ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
A.![]() ![]() | B.直线![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2 . 若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895784697653b457df07987fed7e60b6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知椭圆与双曲线
有相同的焦点,且离心率为
.
(Ⅰ)求椭圆的标准方程;
(Ⅱ)过点P(0,1)的直线与该椭圆交于A、B两点,O为坐标原点,若
,求
的面积 .
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572557501038592/1572557507256320/STEM/906fb495d18345ad932c349c252a7ae1.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572557501038592/1572557507256320/STEM/02049107b755410ab03d0cb9b596e9f8.png)
(Ⅰ)求椭圆的标准方程;
(Ⅱ)过点P(0,1)的直线与该椭圆交于A、B两点,O为坐标原点,若
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572557501038592/1572557507256320/STEM/925f823f95064e9b861d9014f914665d.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572557501038592/1572557507256320/STEM/05921516710c4aa1b165aaeea6d7b910.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed762478d4c1460ea95a9dd9a201d1e.png)
(1)若
对任意的
恒成立,求实数
的取值范围;
(2)求证:对任意的
(
为自然对数的底数.
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed762478d4c1460ea95a9dd9a201d1e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f565470405badb641dc4058caf081aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e3ce576f0766f29349db973fc22eb8.png)
您最近一年使用:0次
2016-12-04更新
|
1056次组卷
|
2卷引用:2016届海南省文昌中学高三上学期期末考试理科数学试卷
5 . 已知直线
与椭圆![](https://img.xkw.com/dksih/QBM/2016/3/18/1572545467555840/1572545473822720/STEM/08aad254d2dc4a0fbeed1d5b64069547.png)
相交于
、
两点.
(1)若椭圆的离心率为
,焦距为
,求线段
的长;
(2)若向量
与向量
互相垂直(其中
为坐标原点),当椭圆的离心率
时,求椭圆长轴长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75efd5283407d903968e9cc0d786b66.png)
![](https://img.xkw.com/dksih/QBM/2016/3/18/1572545467555840/1572545473822720/STEM/08aad254d2dc4a0fbeed1d5b64069547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14da046679a4d8064a45648b3f5b9e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若椭圆的离心率为
![](https://img.xkw.com/dksih/QBM/2016/3/18/1572545467555840/1572545473822720/STEM/90313fb34159480a86c4f9eaa872d825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858bf8324a9ea8db1a257714ff8afc01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3448a1728b998469d1fcaef320d68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2016/3/18/1572545467555840/1572545473822720/STEM/a053376ef929469a9ec85dda638e8764.png)
您最近一年使用:0次
2016-12-04更新
|
1535次组卷
|
2卷引用:2016届海南省文昌中学高三上学期期末考试理科数学试卷