名校
解题方法
1 . 已知圆
,一动圆P与直线
相切且与圆C外切.
(1)求动圆圆心P的轨迹T的方程;
(2)已知过
的直线与曲线T交于A,B两点,点
,直线
,
分别与曲线T交于C,D两点,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250344fed689e5926ed2c6ca315e639c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
(1)求动圆圆心P的轨迹T的方程;
(2)已知过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a0d4c22734cac795de1e5c5fbefa87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bfdb562fbd129ffc213acdfa2f9327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
名校
解题方法
2 . 已知直线l与抛物线
交于A,B两点,O为坐标原点,若直线OA,OB的斜率
,
满足
,则直线l恒过定点( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](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/90a802efc6b05133a91833e2f7074586.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-16更新
|
539次组卷
|
3卷引用:安徽省蚌埠市第二中学2023-2024学年高二上学期12月月巩固检测数学试题
名校
解题方法
3 . 已知抛物线
的准线是
,直线
与抛物线
没有公共点,动点
在抛物线
上,过点
分别作直线
的垂线,垂足分别为
,且
的最小值为
.
(1)求抛物线
的方程;
(2)过
作两条不同的直线
,分别与抛物线
相交于点
与点
,且线段
的中点分别为
.若直线
的斜率之和为2,试问直线
是否经过定点?若经过定点,请求出定点坐标;若不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b527ec9f92467b8f24554a2a67ee987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebe6bf7fa7a4e946292cb8acf41042e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237c115d5b39d761e1cbcae031070b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94182731f9e580137d754f0823459161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a29b194f0420de3594df9207d712265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.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/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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4 . 已知
是抛物线
上不同于原点
的两点,点
是抛物线
的焦点,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159a2d4945049c5a8f525f18763eba91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.点![]() ![]() |
B.![]() |
C.若![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() |
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2023-12-04更新
|
1085次组卷
|
4卷引用:安徽省芜湖市芜湖一中2023-2024学年高二上学期12月教学质量诊断测试数学试题
安徽省芜湖市芜湖一中2023-2024学年高二上学期12月教学质量诊断测试数学试题江苏省盐城第一中学2023-2024学年高二上学期第二次学情调研考试(期中)数学试卷(已下线)专题21 抛物线的性质及与抛物线有关的距离最值问题(期末选择题21)2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)(已下线)微考点6-5 利用二级结论秒杀抛物线中的选填题
5 . 已知点
为抛物线
的焦点,点
,且点
到抛物线准线的距离不大于
,过点
作斜率存在的直线与抛物线
交于
两点(
在第一象限),过点
作斜率为
的直线与抛物线的另一个交点为点
.
(1)求抛物线
的标准方程;
(2)求证:直线BC过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b527ec9f92467b8f24554a2a67ee987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ebd800507b5cf0e2729aedaf125007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)求证:直线BC过定点.
您最近一年使用:0次
2023-07-26更新
|
318次组卷
|
2卷引用:安徽省黄山市2022-2023学年高二下学期期末质量检测数学试题
名校
解题方法
6 . 设抛物线
的焦点为F,点
在抛物线C上,
(其中O为坐标原点)的面积为4.
(1)求a;
(2)若直线l与抛物线C交于异于点P的A,B两点,且直线PA,PB的斜率之和为
,证明:直线l过定点,并求出此定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5fe7fb2814deb72a16692e0dfd60a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c71c49dc9a9de1a0221769e4eb8616.png)
(1)求a;
(2)若直线l与抛物线C交于异于点P的A,B两点,且直线PA,PB的斜率之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
您最近一年使用:0次
2023-04-18更新
|
2135次组卷
|
8卷引用:安徽省合肥市第五中学2022-2023学年高二下学期学科教学评价数学试卷
解题方法
7 . 设点
,动圆
经过点
且和直线
相切,记动圆的圆心
的轨迹为曲线
.
(1)求曲线
的方程.
(2)若点
,
(不与坐标原点
重合)是曲线
上的两个动点,且
,问:在
轴上是否存在定点
使得
恒成立?若存在,请求出点
的坐标;若不存在,请说明理由..
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e893f3ec615ca839ced0540b3f5d0a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解题方法
8 . 已知
是抛物线
:
的焦点,
为坐标原点,点
,
在抛物线
上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/c5db41a1f31d6baee7c69990811edb9f.png)
A.若直线![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
9 . 已知抛物线C:
的焦点为F,斜率为1的直线l经过F,且与抛物线C交于A,B两点,
.
(1)求抛物线C的方程;
(2)过抛物线C上一点
作两条互相垂直的直线与抛物线C相交于
两点(异于点P),证明:直线
恒过定点,并求出该定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ed9d97b8745ed1c15349ea3fffc299.png)
(1)求抛物线C的方程;
(2)过抛物线C上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d02aa702406987fbeb90f0ab7ea1f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2023-03-03更新
|
550次组卷
|
4卷引用:安徽省蚌埠市铁路中学2023-2024学年高二上学期期中检测数学试题
安徽省蚌埠市铁路中学2023-2024学年高二上学期期中检测数学试题江苏省泰州市靖江高级中学2022-2023学年高二下学期第一次调研测试数学试题(已下线)重难专攻(十)圆锥曲线中的定点问题 讲(已下线)重难点突破08 圆锥曲线的垂直弦问题 (八大题型)
10 . 抛物线的弦与在弦两端点处的切线所围成的三角形被称为“阿基米德三角形”.对于抛物线C:
给出如下三个条件:①焦点为
;②准线为
;③与直线
相交所得弦长为2.
(1)从以上三个条件中选择一个,求抛物线C的方程;
(2)已知
是(1)中抛物线的“阿基米德三角形”,点Q是抛物线C在弦AB两端点处的两条切线的交点,若点Q恰在此抛物线的准线上,试判断直线AB是否过定点?如果是,求出定点坐标;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004cf3e8335136acc770de0c525cae47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb70fdf064b9193e506ca43f4672af56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3397d5c5786431a89d2a617766ca92f2.png)
(1)从以上三个条件中选择一个,求抛物线C的方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
您最近一年使用:0次