解题方法
1 . 已知抛物线
的准线l与x轴相交于点K,BK与抛物线的焦点弦AB垂直,AH垂直于x轴,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23de945da24e53cc75f18c30bde8ee6.png)
您最近一年使用:0次
2 . 已知点
到点
的距离与点
到直线
的距离相等.
(1)求点
的轨迹方程;
(2)设点
的轨迹为曲线
,过点
且斜率为1的直线与曲线
相交于不同的两点
,
,
为坐标原点,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fa7155f6858a570e8dee2495822a3.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/acc290b44635265137fdf13146b6a6d9.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
您最近一年使用:0次
2020-01-14更新
|
255次组卷
|
2卷引用:新疆维吾尔自治区喀什地区巴楚县第一中学2024届高三第三次模拟考试数学试题
19-20高二·全国·课后作业
解题方法
3 . 若点
是抛物线
上的一个动点,求点
到点
的距离与
到该抛物线准线的距离之和的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
19-20高二·全国·课后作业
4 . 若抛物线
上有一点
,其横坐标为
,它到焦点的距离为
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed5cf0b4c918b2795034e5b2b53cd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aab28a20b5bf47040aaec03b1eb550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
5 . 在平面直角坐标系
中,动圆过点
且与直线
相切,设该动圆圆心的轨迹方程为曲线
.
(1)求曲线
的方程;
(2)设
是曲线
上的动点,点
的横坐标为
,点
在
轴上,
的内切圆的方程为
,将
表示成
的函数,并求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e69ab37ec08667f1dfd09369561f717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6316e0e6da742e9b035d8f2cc91a4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37844a6a6111bd0bbf5fedc8b9acda5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
您最近一年使用:0次
6 . 已知抛物线
上有一点
到焦点
的距离为
,
(1)求
及
的值.
(2)过焦点
的直线
交抛物线于
,
两点,若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7500ff47bd51d783b2c233b0dc5c481b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)过焦点
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c348601813d70ba64ffca73cf2256f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2016-12-04更新
|
638次组卷
|
2卷引用:3.3.2 抛物线的简单几何性质(第1课时)(分层作业)(3种题型分类基础练+能力提升练)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第一册)
名校
解题方法
7 . 已知抛物线
的焦点F和椭圆
的右焦点重合.
(1)求抛物线
的方程;
(2)若定长为5的线段
两个端点在抛物线
上移动,线段
的中点为
,求点
到y轴的最短距离,并求此时
点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
(1)求抛物线
![](https://img.xkw.com/dksih/QBM/2015/6/23/1572137419350016/1572137422766080/STEM/f647420402924e11ab56cfb3355a1222.png)
(2)若定长为5的线段
![](https://img.xkw.com/dksih/QBM/2015/6/23/1572137419350016/1572137422766080/STEM/1fca4afcf5ca40b5b84c6dcda562c45c.png)
![](https://img.xkw.com/dksih/QBM/2015/6/23/1572137419350016/1572137422766080/STEM/f647420402924e11ab56cfb3355a1222.png)
![](https://img.xkw.com/dksih/QBM/2015/6/23/1572137419350016/1572137422766080/STEM/1fca4afcf5ca40b5b84c6dcda562c45c.png)
![](https://img.xkw.com/dksih/QBM/2015/6/23/1572137419350016/1572137422766080/STEM/f67d5f4f89124c42b64fef662f7b4ad8.png)
![](https://img.xkw.com/dksih/QBM/2015/6/23/1572137419350016/1572137422766080/STEM/f67d5f4f89124c42b64fef662f7b4ad8.png)
![](https://img.xkw.com/dksih/QBM/2015/6/23/1572137419350016/1572137422766080/STEM/f67d5f4f89124c42b64fef662f7b4ad8.png)
您最近一年使用:0次
2016-12-03更新
|
699次组卷
|
3卷引用:3.3.1 抛物线及其标准方程练习
8 . 已知抛物线
的焦点为
是过
的直线与抛物线的两个交点,求证:
(1)
;
(2)
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6862ebbba8511197ea8a3a5da773f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5476b7d9ba908635adacb1fa46f0a4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e5109b55b3b96af00c792527c77cca.png)
您最近一年使用:0次
2016-12-04更新
|
264次组卷
|
2卷引用:北师大版(2019) 选修第一册 数学奇书 第二章 圆锥曲线 §4 直线与圆锥曲线的位置关系 4.2 直线与圆锥曲线的综合问题
名校
解题方法
9 . 在平面直角坐标系中,已知动点M到点
与到直线
的距离相等.
(1)求动点M的轨迹E的方程;
(2)设点P是轨迹E上的动点,点Q,R在x轴上,圆
内切于
,求
的面积最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f772c3845894acb33c695f4e235fbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ede20ce638de73ac52d3c58122fd7dd.png)
(1)求动点M的轨迹E的方程;
(2)设点P是轨迹E上的动点,点Q,R在x轴上,圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ee1aeafdfc0aa7ae03e7336c81b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c28abb154f41e1ca9816c9c9c2433ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c28abb154f41e1ca9816c9c9c2433ca.png)
您最近一年使用:0次