名校
解题方法
1 . 已知抛物线
的焦点F到准线的距离为2,过点F的直线l与抛物线C交于
,
两点,若
,则线段
的长度为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af405a054bfe7fb7ce40e48d816467e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f7253854e855e77345d57ca84e68d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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解题方法
2 . 曲线
的焦点坐标为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54403bdf1e93df46dba853594194d956.png)
您最近一年使用:0次
解题方法
3 . 设
为坐标原点,
是以
为焦点的抛物线
上任意一点,
是线段
上的点,且
,则直线
斜率的最大值为_______ .
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61a41c8577c8d00c7abe3eafc7161d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
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4 . 已知抛物线
在
处的切线过点
,则该抛物线的焦点坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdde79d927a71de5ee3e07b5d7fe6235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f4b6055b194edfa32f77d2c6df675.png)
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解题方法
5 . 已知点
为抛物线
的焦点,点
在抛物线上且横坐标为8,
为坐标原点,若
的面积为
,则该抛物线的准线方程为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.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/a0942fc5e4da4ae86721efc5bb7e2cfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
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名校
解题方法
6 . 已知抛物线
:
的焦点为
,过点
且斜率为2的直线与抛物线
交于
,
两点(点
在
轴的上方),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52bb0f4140073a47e45c5093be46f1a9.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/a0ed1ec316bc54c37c4286c208f55667.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52bb0f4140073a47e45c5093be46f1a9.png)
您最近一年使用:0次
2022-05-31更新
|
547次组卷
|
10卷引用:第15讲 抛物线(1)
(已下线)第15讲 抛物线(1)河南省部分学校2021-2022学年高二5月联考理科数学试题河南省安阳市2021-2022学年高二下学期5月月考数学理科试题(已下线)第17讲 抛物线-【暑假自学课】2022年新高二数学暑假精品课(人教版2019必修第二册+选择性必修第一册)山西省部分学校大联考2023届高三上学期期末数学试题山西省朔州市怀仁市第一中学校等学校2024届高三上学期摸底数学试题四川省绵阳市南山中学实验学校2023-2024学年高二上学期期末模拟数学试题(五)甘肃省庆阳市庆城县陇东中学2024届高三上学期第五次月考数学试题黑龙江省大庆铁人中学2023-2024学年高二下学期开学考试数学试题吉林省通化市梅河口市第五中学2024届高三三模数学试题
7 . 过抛物线
的焦点
作圆
的切线,切点为
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12dc1bdded62dae38ef3bd02e886757a.png)
________________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3861cd6930a03b294357b46455952b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb31c084e5eda07d0eb1e718921ebfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5f556532f7605ad2365b45a25f8559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001cbdad16be1439ee1f892538101bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7358f3cedddccd7a272e3cef05a5499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12dc1bdded62dae38ef3bd02e886757a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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解题方法
8 . 已知抛物线
的焦点为
,过
且垂直与
轴的直线与
相交于
,
两点,若
(
为坐标原点)的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b837fd9c52f60bfb3b6852733abc790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
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2022-05-29更新
|
412次组卷
|
3卷引用:重难点15七种圆锥曲线的应用解题方法-1
解题方法
9 . 已知
三点在抛物线
上,且
的重心恰好为抛物线的焦点,则
的三条中线的长度的和为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48f28aeccf369df5980ac787e9e313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
10 . 已知抛物线
,
为C上一点,
轴,垂足为Q,F为C的焦点,O为原点.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaec8432d021970b0ae30219dda29417.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2784a52c4da98dc9df661fc152fc29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54edadd93c68b0105da2dccc8c3f410c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaec8432d021970b0ae30219dda29417.png)
您最近一年使用:0次
2022-05-05更新
|
1228次组卷
|
5卷引用:专题3 求角度运算(基础版)