1 . 已知抛物线
的焦点为
,直线
交抛物线
于
两点,当直线
过点
时,点
到
的准线的距离之和为
,线段
的中点到
轴的距离是4.
(1)求抛物线
的方程;
(2)当
时,设抛物线
在点
处的切线交于点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b68bc87ec76189d5fedd42fca080ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f60b426e6d144098cced053b49137dc.png)
您最近一年使用:0次
2023-05-13更新
|
499次组卷
|
3卷引用:甘肃省2023届高三第三次高考诊断考试文科数学试题
名校
解题方法
2 . 已知椭圆
与抛物线
有相同的焦点
,抛物线
的准线交椭圆
于
两点,且
.
(1)求椭圆
与抛物线
的方程;
(2)
为坐标原点,若
为椭圆
上任意一点,以
为圆心,
为半径的圆
与椭圆
的焦点
为圆心,以
为半径的圆
交于
两点,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce4ea1d967255a19f1035ddbbf2aad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf92a1ba410263d4f68b7e0432b19aa.png)
![](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/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236f52e04ddbd7253f44b97c4756ef9c.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
您最近一年使用:0次
2021-05-04更新
|
290次组卷
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5卷引用:甘肃省张掖市某重点校2023-2024学年高二上学期9月月考数学试题
甘肃省张掖市某重点校2023-2024学年高二上学期9月月考数学试题陕西省榆林市2020-2021学年高三上学期一模理科数学试题(已下线)专题21 抛物线综合-2020年高考数学母题题源全揭秘(浙江专版)(已下线)押第21题圆锥曲线-备战2021年高考数学临考题号押题(浙江专用)(已下线)考向39 直线与圆、圆与圆的位置关系-备战2022年高考数学一轮复习考点微专题(新高考地区专用)
解题方法
3 . 已知抛物线
=
焦点坐标为
.
(1)求抛物线
的方程;
(2)已知点
,设不垂直于
轴的直线
与抛物线
交于不同的两点
,
,若
轴是
的角平分线,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d0e17395daa2ead6688c2b3748a282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4fc026d257756c112b4775a95ccd94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80bb593d933cbc878986a8bb88cd2c2b.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607764e60ecf374a685d0808f81bbfbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b627acc3fd4cf9f4971ed7ada3956f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2020-07-12更新
|
397次组卷
|
4卷引用:甘肃省会宁县第四中学2019-2020学年高二下学期期末考试数学(文)试题
甘肃省会宁县第四中学2019-2020学年高二下学期期末考试数学(文)试题甘肃省会宁县第四中学2019-2020学年高二下学期期末考试数学(理)试题湖北省武汉市江岸区2019-2020学年高三上学期元月调研理科数学试题(已下线)理科数学-2021年高考押题预测卷(新课标Ⅰ卷)03
名校
4 . 设抛物线C的顶点在原点,焦点F在y轴上,开口向上,焦点到准线的距离为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)求抛物线的标准方程;
(2)已知抛物线C过焦点F的动直线l交抛物线于A、B两点,O为坐标原点,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)求抛物线的标准方程;
(2)已知抛物线C过焦点F的动直线l交抛物线于A、B两点,O为坐标原点,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a2ef115b3e4d764e54e8b29e33b036.png)
您最近一年使用:0次
2018-11-14更新
|
501次组卷
|
3卷引用:甘肃省兰州市城关区兰州第一中学2019-2020学年高二上学期期末数学(文)试题
甘肃省兰州市城关区兰州第一中学2019-2020学年高二上学期期末数学(文)试题海南省文昌中学2017-2018学年高二上学期期中考试数学(文)试题(已下线)活页作业12-2018年数学同步优化指导(北师大版选修1-1)
名校
解题方法
5 . 抛物线
的顶点在坐标原点
,焦点
在
轴正半轴上,准线
与圆
相切.
(1)求抛物线
的方程;
(2)已知直线
和抛物线
交于点
,
,命题
:“若直线
过定点
,则
”,请判断命题的真假,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3775b64eff0e1a7cf44d92c582aa717.png)
您最近一年使用:0次
2017-02-08更新
|
1055次组卷
|
3卷引用:甘肃省肃南县第一中学2017-2018学年高二上学期期中考试数学(文)试题