名校
1 . 如果圆
上总存在到点
的距离为
的点,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8340e7480650698315fd6d2feb5164ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2017-07-10更新
|
568次组卷
|
3卷引用:广东省揭阳市惠来一中、揭东一中2016-2017学年高一下学期期末联考数学(理)试题
名校
2 . 若曲线
上所有的点均在第二象限内,则a的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6840269ca39b62feb3202c680c23935.png)
您最近一年使用:0次
3 . 已知圆
,若点
在圆外,则直线
与圆
的位置关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab11ba6b230c4309e1b899eb58daae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3373354fb529bb6eba5dd5b8f947f49d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.相离 | B.相切 | C.相交 | D.不能确定 |
您最近一年使用:0次
2017-12-26更新
|
642次组卷
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3卷引用:2016届福建省福州市格致中学鼓山校区高三上学期期末理科数学试卷
解题方法
4 . 已知双曲线
的左、右焦点分别为
,过
且垂直于
轴的直线交双曲线于
两点,若
为以
为直径的圆外一点,则该双曲线离心率的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在平面直角坐标系
中,直线
与原点
为圆心的圆相交所得弦长为
.
(1)若直线
与圆
切于第一象限,且直线
与坐标轴交于点
,当
面积最小时,求直线
的方程;
(2)设
是圆
上任意两点,点
关于
轴的对称点为
,若直线
分别交于
轴与点
和
,问
是否为定值?若是,请求处该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b979396a703fb14715ba39232f5786a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf1a6ed39ffc2b729fd4a79c8c386e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e00bf73d03dded1cf5f83cc5339361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c3354f60968ef26687c2fc2d38d35de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a9bdd29d59076fe62bc2aee8a94e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ac1838686c79e778cec6ac87a4f928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1455aac1db4549c41c066a34cf95931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019d4ad2e3fb4a7abb66e0e9e55b556.png)
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6 . 已知圆
,考虑下列命题:①圆
上的点到
的距离的最小值为
;②圆
上存在点
到点
的距离与到直线
的距离相等;③已知点
,在圆
上存在一点
,使得以
为直径的圆与直线
相切,其中真命题的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9058b4c2f24003a5cb54c10177f18fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec85f29c0860b57a8f0cf8098c13a97e.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/76d66e9d52546beeea016d6d7d3f0ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ffc12c0f0e4be8074472571c9079cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31ecb30e3cb9498d2c9ba69feffbd1c.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
2018-03-13更新
|
503次组卷
|
2卷引用:四川省成都七中2018届高三二诊(3月)模拟考试数学(理)试题
7 . 已知气象台A正西300km处有一个台风中心,台风以40km/h的速度向东北方向移动,距台风中心250km以内的地方都在台风圈内.问:从现在起大约多长时间后,气象台A进入台风圈?气象台A处在台风圈内的时间大约多长?
您最近一年使用:0次
名校
解题方法
8 . 在平面直角坐标系
中,点
,
,直线
,圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c43d553c17925bc1e64bd35306ca797.png)
(1)若点
在圆
外,求实数
的取值范围;
(2)有一动圆
的半径为
,圆心在
上,若动圆
上存在点
,使
,求圆心
的横坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc878a5fd7b508cf817cbb65d3940547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b54b9cf95418bc3dce6e4c698b9907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139189550dc26d6130088799c1e65581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c43d553c17925bc1e64bd35306ca797.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)有一动圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/97d5efed9e0e3e08b096413fcc38dd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-21更新
|
153次组卷
|
2卷引用:山西省太原市小店区山西大学附属中学校2019-2020学年高二上学期12月月考数学(理)试题
名校
9 . 双曲线
与直线
相交于
、
两点.
(1)求
的取值范围;
(2)
为何值时,
(其中
为原点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d494590d49480ec45f55b84098aa99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5375e9cb3d83b66bba64998de3ad01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0954a8b329893eb0c5b400e3fbc4042f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
名校
10 . 已知点
,圆
,点
在圆
上运动.
(
)如果
是等腰三角形,求点
的坐标.
(
)如果直线
与圆
的另一个交点为
,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8c39de4d7d1277da346b51b5bd2499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532d9de08698f61d7c010805c61a4ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307afa44af2f4c8efdbc6c83d188921e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
您最近一年使用:0次
2018-03-30更新
|
335次组卷
|
2卷引用:北京市西城35中2017-2018学年高二上期中数学真题试题