1 . 已知抛物线
的焦点为
,其准线与
轴交于点
,过点
作直线交抛物线
于
,
两点,若
,且
,则
的值为___________ .
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65dcbbfd889a7ed8eb3eed09a1675a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2020-10-29更新
|
872次组卷
|
4卷引用:云南省云南昆明市第一中学2021届高中新课标高三(10月)第二次双基检测理科数学试题
名校
解题方法
2 . 已知抛物线
与圆
一个交点的横坐标
,动直线
与
相切于点
,与
交于不同的两点
,
,
为坐标原点.
(1)求
的方程;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8a3bffe545af2299cf999d44767206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e225f95dbfc83e7d0ae9b2c4479cf1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6add25e5e10c77bd3e80c12d62520b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/1dde8112e8eb968fd042418dd632759e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfe4da6f357e55927d25d9d27ea8717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e712d2bacb40498636e9ff78cb1df54.png)
您最近一年使用:0次
2020-07-22更新
|
270次组卷
|
3卷引用:云南省水富市云天化中学2020-2021学年高二上学期期末数学(文)试题
3 . 已知抛物线
,过其焦点且斜率为1的直线交抛物线于
、
两点,若线段
的中点纵坐标为2,则该抛物线的标准方程为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd64a4db526811d8be3c055b7118c733.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-06-15更新
|
287次组卷
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3卷引用:云南省峨山彝族自治县第一中学2019-2020学年高二下学期期中考试数学(文)试题
云南省峨山彝族自治县第一中学2019-2020学年高二下学期期中考试数学(文)试题宁夏青铜峡市高级中学2020-2021学年高二下学期开学考试数学(文)试题(已下线)专题3-5 抛物线定义及性质12种题型归类(讲+练)-【巅峰课堂】2023-2024学年高二数学热点题型归纳与培优练(人教A版2019选择性必修第一册)
名校
4 . 已知抛物线
(
)的焦点为
,抛物线上的点
到
轴的距离为
.
(1)求
的值;
(2)已知点
,若直线
交抛物线于另一个点
,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b35f0b940c8422ef47edc3b7ce55e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/b0a2ef39390b983cd39eaeebfc19d3ea.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7af3d5765382269f380d39b0ffc9d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
您最近一年使用:0次
2020-04-12更新
|
565次组卷
|
4卷引用:云南省曲靖市罗平县第二中学2020-2021学年高二下学期期末测试数学(理)试题
名校
5 . 过抛物线
的焦点
作直线
交抛物线
于
、
,若
,则直线
的斜率是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88e4b206952cb5442c110d8d81e7ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f8f333303816ff66e3aa44bcf97268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2017-03-03更新
|
694次组卷
|
4卷引用:云南省曲靖市会泽县第一中学2019-2020学年高二上学期第一次段考数学(理)试题