名校
1 . 双曲线
的焦点到C的渐近线的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9445e5b2c498ad740d43e43588a613.png)
A.![]() | B.![]() | C.5 | D.![]() |
您最近一年使用:0次
2021-11-29更新
|
520次组卷
|
3卷引用:四川省巴中市南江中学2021-2022学年高二上学期12月月考数学(文)试题
2 . 已知动点
与平面上点
,
的距离之和等于
.
(1)试求动点
的轨迹方程
;
(2)设直线
与曲线
交于
、
两点,当
时,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)试求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c31facd7be5f8b55ccc9ab6051f9d30.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484b915105bfae468812f2413fe8a172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2021-11-09更新
|
1022次组卷
|
4卷引用:四川省巴中市南江中学2021-2022学年高二上学期12月月考数学(文)试题
名校
3 . 已知命题
是
的充要条件,命题
,
.下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87803433edbe8451a7edf806bb1bd4e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f7c54faca6eac8af5309942062058d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80cab2f87002ca6e08cd56ccd7fee140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c5a35999db8d18df45de5ac72ee16e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-23更新
|
333次组卷
|
5卷引用:四川省巴中市2021-2022学年高三上学期“零诊”数学(文科)试题
17-18高二·全国·课后作业
名校
4 . 焦点在
轴上,短轴长为8,离心率为
的椭圆的标准方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-04-07更新
|
988次组卷
|
7卷引用:四川省巴中市南江中学2021-2022学年高二上学期12月月考数学(理)试题
名校
5 . 已知椭圆
上一点
到其左焦点
的距离为1,则
的中点
到坐标原点
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2c17fca5d9b70a31a66e791d830163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.3 | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
2021-03-26更新
|
1179次组卷
|
6卷引用:四川省巴中市南江中学2021-2022学年高二上学期12月月考数学(文)试题
6 . 双曲线
的离心率为
,点
,
是双曲线上关于原点对称的两点,点
是双曲线上异于点
,
的动点,若直线
,
的斜率都存在且分别为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
您最近一年使用:0次
解题方法
7 . 已知双曲线
的一条渐近线过点
,则它的离心率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a20a61d384b658080b92d8c1a9e7c0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知直线
,
和平面
满足
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5475e10ea3f37788e680395999037a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f345365fe0a1986b80299f7a99a306.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
9 . 已知
,命题
方程
表示焦点在
轴上的椭圆;命题
方程
表示双曲线.若
为真命题,
为假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeea9ab56d00e8ebb01fa4fef5db2fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6993955c96f9781d35886ca8a96094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-02-04更新
|
223次组卷
|
2卷引用:四川省巴中中学、南江中学2020-2021学年高二上学期期末联考数学(理)试题
10 . 我国的航天事业取得了辉煌的成就,归功于中国共产党的坚强领导,这归功于几代航天人的不懈奋斗.中国工程院院士、中国探月工程总设计师、巴中老乡吴伟仁先生就是其中最杰出的代表人物之一,同学们应当好好学习航天人和航天精神.我国发射的第一颗人造地球卫星的运行轨道是以地心(地球的中心)
为一个焦点的椭圆.已知它的近地点(离地面最近的点)
距地面
千米,远地点(离地面最远的点)
距离地面
千米,并且
、
、
在同一条直线上,地球的半径为
千米,则卫星运行的轨道的短轴长为( )千米
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-02-04更新
|
394次组卷
|
2卷引用:四川省巴中中学、南江中学2020-2021学年高二上学期期末联考数学(理)试题