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1 . 椭圆
:
的左、右焦点分别为
、
,直线
经过点
与椭圆
交于点
,点
在
轴的上方.当
时,
.
(1)求椭圆
的方程;
(2)若点
是椭圆
上位于
轴上方的一点,
,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](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/b44c7d3a8499af18da17231d6b898274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447e6fc9b4312fc3d7ce0d49bbd4d1ce.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4148e6581d23cc7adcc46417ec17f4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b369b33bf95c328c886803b22d4d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2 . 已知
,则“
”是“
”的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc50d56ff658350d65661caa7d0b56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e539935d4ca40b33bc061f6cd4b75b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e56e8be58705ffffdf4dda36228f2b.png)
A.充分必要条件 | B.充分不必要条件 |
C.必要不充分条件 | D.既不充分也不必要条件 |
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2018-12-30更新
|
256次组卷
|
2卷引用:【全国百强校】西藏山南地区第二高级中学2019届高三上学期期中模拟数学试题
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3 . 设
为双曲线
(
,
)的右焦点,若
的垂直平分线与渐近线在第一象限内的交点到另一条渐近线的距离为
,则双曲线的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18c392704d4353ad38768789c5c9031.png)
A.![]() | B.![]() | C.![]() | D.3 |
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2017-03-31更新
|
399次组卷
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3卷引用:【全国百强校】西藏山南地区第二高级中学2019届高三上学期期中模拟数学试题
【全国百强校】西藏山南地区第二高级中学2019届高三上学期期中模拟数学试题2017届广东省广雅中学、江西省南昌二中高三下学期联合测试文数试卷(已下线)专题9.4 双曲线 (精练)-2021年高考数学(理)一轮复习学与练
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4 . 以下四个命题中,真命题的是( )
A.![]() |
B.“对任意的![]() ![]() |
C.![]() ![]() |
D.![]() ![]() ![]() |
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2016-07-04更新
|
756次组卷
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5卷引用:【全国百强校】西藏山南地区第二高级中学2019届高三上学期期中模拟数学试题