1 . 已知椭圆
的离心率为
,且过点
.圆
的切线l与椭圆E相交于A,B两点.
(2)直线OA,OB的斜率存在为
,
,直线l的斜率存在为k,若
,求直线l的方程;
(3)直线OA,OB与圆
的另一个交点分别为C,D,求
与
的面积之和的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
(2)直线OA,OB的斜率存在为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a08a512b63d60ae9ef4315ed8615542.png)
(3)直线OA,OB与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
您最近一年使用:0次
2024-06-01更新
|
520次组卷
|
3卷引用:重庆市巴蜀中学校2023-2024学年高二下学期期中考试数学试题
名校
2 . 已知
满足:
,则代数式
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945dade6bba486831fd909efb350df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71c62953bb4b89902a3b88b34c03276.png)
您最近一年使用:0次
名校
3 . 设抛物线
,圆
.已知
上的点到
的准线的距离的最小值为2.
(1)求
;
(2)倾斜角为
的直线
与
交于
两点,与
交于
两点.
(i)若
为圆
的直径,求
的面积;
(ii)当
取最大值时,求直线
在
轴上的截距.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8fe070d417604233ff235054f600c34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b1c4ff854141d6ae15d10e3e82deb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
(i)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
(ii)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2135ff2675324de8a374aadca74e869f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
名校
4 . 直线
与曲线
有两个交点,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f854ce930a01f6fc2102ad7131512ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27bf4fb6356b6b53adc9cf839885975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 设
为直线
上的动点,若圆
上存在两点A,B,使
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab34fa1d24442da67e0c12f7703900c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be3a4efcc97bfb35ea88f867d6b543f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知椭圆的左右焦点分别为
,
,离心率是
,P为椭圆上的动点.当P在椭圆上顶点时,
的面积是
.
(1)求椭圆的方程;
(2)若动直线l与椭圆E交于A,B两点,且恒有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc11e7549cfce9220e70250ac943e457.png)
您最近一年使用:0次
名校
7 . 若直线
与圆
相离,则过点
的直线与椭圆
的交点个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d473707f01512369d6566bab0103149d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5331c7d51a4892cf1671f5bb5f3d7713.png)
A.0或1 | B.0 | C.1 | D.2 |
您最近一年使用:0次
2024-03-01更新
|
146次组卷
|
2卷引用:重庆市万州区万州第三中学2023-2024学年高二下学期入学考试数学试题
名校
8 . 某游乐园中有一座摩天轮.如图所示,摩天轮所在的平面与地面垂直,摩天轮为东西走向.地面上有一条北偏东为
的笔直公路,其中
.摩天轮近似为一个圆,其半径为
,圆心
到地面的距离为
,其最高点为
点正下方的地面
点与公路的距离为
.甲在摩天轮上,乙在公路上.(为了计算方便,甲乙两人的身高、摩天轮的座舱高度和公路宽度忽略不计)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/c50080be-44e3-4828-9bf3-8f8e58a640df.png?resizew=218)
(1)如图所示,甲位于摩天轮的
点处时,从甲看乙的最大俯角的正切值等于多少?
(2)当甲随着摩天轮转动时,从乙看甲的最大仰角的正切值等于多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbbc31960240afea742753b6a8dad6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4053cc2a31e9703bf80b62b5ea18c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c758c27bec97c234d1d818c40f3d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1d5a8cd34aff27b8ed21c977c3946f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d112c9693aa126c92bf1402a1f66bcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/c50080be-44e3-4828-9bf3-8f8e58a640df.png?resizew=218)
(1)如图所示,甲位于摩天轮的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)当甲随着摩天轮转动时,从乙看甲的最大仰角的正切值等于多少?
您最近一年使用:0次
2024-02-27更新
|
271次组卷
|
3卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期开学学业质量联合调研抽测数学试题
名校
解题方法
9 . 已知圆
与中心在原点、焦点在
轴上的双曲线
的一条渐近线相切,则双曲线
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949a21d6f1a4bc5a3247bc7e2ddec19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
10 . 已知圆
过二次函数
与坐标轴的所有交点.
(1)求圆
的标准方程;
(2)过点
的直线
与圆
交于
两点,
为坐标原点,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbefcfbe1e11157ac97ae58d4029626.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4afe0675f2c733af5c05ca00811c5ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7db9b4ac9106bfaf32eba6ae265872b.png)
您最近一年使用:0次