名校
1 . 已知椭圆
的短轴长为
,左、右顶点分别为
,过右焦点
的直线
交椭圆
于
两点(不与
重合),直线
与直线
交于点
.
(1)求椭圆
的方程;
(2)求证:点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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解题方法
2 . 已知O为坐标原点,椭圆
上一点D的横坐标为1,斜率存在的直线l交椭圆C于A,B两点,且直线DA,DB的斜率之和等于1.
(1)求
;
(2)若点D在第一象限,探究
的面积是否有最大值?若有,求出最大值;若没有,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d84072e42ab4af37340ee0906535ef.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2288109e13b7dd099f8dba9bd4997c.png)
(2)若点D在第一象限,探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
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3 . 直线
截圆
所得劣弧所对的圆心角为
,则r的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4958a3ab5b7a862f715b14822710b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1eeecbc0147648a0d48808eebda305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知三角形的顶点为
,
,
.
的方程;
(2)若直线l过点B且与直线
交于点E,
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f8297bca75733768012232c0780311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326a6474089e6a774014906f4c1ba633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1810b42b462ac59a6c718b3d6a513e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若直线l过点B且与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14927608e4fcaa93867a7aa1780d63d9.png)
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5 . 若直线
经过点
,则( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96d06d25c0ad378899d07b847c80256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8508bedaf1d991f2aec84b1868de539.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 在平面直角坐标系
中,已知
为圆
上动点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d45ffc2aab28c1a42e70ee3d0a5ca5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7e74305038711eb557a91bcf955c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a430c41f782c5c12f68a49c5d0cb1ee2.png)
A.34 | B.40 | C.44 | D.48 |
您最近一年使用:0次
2024-04-08更新
|
624次组卷
|
2卷引用:北京市通州区潞河中学2023-2024学年高三下学期第三次模拟数学试卷
7 . 在平面直角坐标系中, 记
为点
到直线
的距离, 则当
变化时,
的最大值与最小值之差为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a39eb343f10b190dcba68fd1e8bb37f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdee4045d21a57f58bdbc7a3183d5f5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85952754cbc607e5a0d01332cd26be83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
A.2 | B.3 | C.4 | D.6 |
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8 . 边长为2的正方形ABCD,点P在正方形内(含边界),满足
,现有下列结论:
①当点P在线段BD上时,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
②
的取值范围为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2aa311daf7a73f8c45de4462f9d92b6.png)
③当点P在线段BD上时,
的最小值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
④
的最大值为12
则结论中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f2c98c84895030f3dffa92cb25ad20.png)
①当点P在线段BD上时,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2aa311daf7a73f8c45de4462f9d92b6.png)
③当点P在线段BD上时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4a1a2a3a3b9d15539501245b48f889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d79576c076958375a4e006dbb9c7e08.png)
则结论中正确的个数是( )
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
23-24高二下·北京·开学考试
名校
解题方法
9 . 已知椭圆
,直线
与C相交于A,B两点.
(1)求椭圆C的离心率;
(2)O为坐标原点,若
,求直线l与原点的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f936992d106cfb7126212d2784399a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
(1)求椭圆C的离心率;
(2)O为坐标原点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
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10 . 已知点F是双曲线
的一个焦点,直线
,则“点F到直线l的距离大于1”是“直线l与双曲线C没有公共点”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4058fc45c49e6710ba7e273cb7888704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3016baf1a9ce777f16ea9ce469b2510.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
2024-02-18更新
|
188次组卷
|
2卷引用:北京市清华附中高22级2023-2024学年高二上学期期末数学试题