1 . 已知抛物线
,过点
的动直线
交抛物线于
两点,当直线
的斜率为-1时,点
恰为
的中点
(1)求抛物线的方程;
(2)抛物线上是否存在一个定点
,使得以弦
为直径的圆恒过点
,若存在,求出点
坐标,若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da6948da77a1f269931ca9ef8722325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f332f6cc2ba1aa7ee961b7b0188b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求抛物线的方程;
(2)抛物线上是否存在一个定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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名校
2 . 顶点在原点,经过圆
的圆心且准线与
轴垂直的抛物线方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa9f16772efce4b0f34c2c524b69692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2016-12-04更新
|
427次组卷
|
3卷引用:2015届吉林省实验中学高三年级第二次模拟考试理科数学试卷
名校
解题方法
3 . 已知抛物线
上一点
到焦点
的距离为5,则
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/82010b61502fa67de56d9c15ffa2abbf.png)
您最近一年使用:0次
2016-12-04更新
|
481次组卷
|
3卷引用:2017届吉林省梅河口市第五中学高三一模数学(文)试卷
解题方法
4 . 设椭圆
的左焦点为
,右顶点为
,离心率为
,短轴长为
,已知
是抛物线
的焦点.
(1)求椭圆
的方程和抛物线
的方程;
(2)若抛物线
的准线
上两点
关于
轴对称,直线
与椭圆相交于点
(
异于点
),直线
与
轴相交于点
,若
的面积为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.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/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0107aa23cf707446f947fa236421c1f0.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
您最近一年使用:0次
5 . 已知抛物线
,过点
的动直线
交抛物线于
两点,线段
的中点为
,当直线
的斜率为-1时,点
恰为线段
的中点
(1)求抛物线的方程;
(2)抛物线上是否存在一个定点
,使得
,若存在,求出点
坐标,若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da6948da77a1f269931ca9ef8722325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f332f6cc2ba1aa7ee961b7b0188b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求抛物线的方程;
(2)抛物线上是否存在一个定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc4b89a0b4f2a85ab3de49170ebf0b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2014高三·全国·专题练习
名校
6 . 如图所示,抛物线C1:x2=4y,C2:x2=-2py(p>0).点M(x0,y0)在抛物线C2上,过M作C1的切线,切点为A,B(M为原点O时,A,B重合于O).当x0=1-
时,切线MA的斜率为-
.
![](https://img.xkw.com/dksih/QBM/2014/4/9/1571606397583360/1571606403358720/STEM/e0d19708147144a3b2c09877cef2011d.png)
(1)求p的值;
(2)当M在C2上运动时,求线段AB中点N的轨迹方程(A,B重合于O时,中点为O).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2014/4/9/1571606397583360/1571606403358720/STEM/e0d19708147144a3b2c09877cef2011d.png)
(1)求p的值;
(2)当M在C2上运动时,求线段AB中点N的轨迹方程(A,B重合于O时,中点为O).
您最近一年使用:0次
2014·吉林·一模
7 . 已知双曲线
的左顶点与抛物线
的焦点的距离为4,且双曲线的一条渐近线与抛物线的准线的交点坐标为(-2,- 1),则双曲线的焦距是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9061d9b59fc7f4cef893766ab0af388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29fae92249bee4dfba15ed4b5a3de8da.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 已知双曲线
,点
是抛物线
上的一动点,且
到双曲线
的焦点
的距离与到直线
的距离之和的最小值为
,则双曲线
的实轴长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024c82fb6deddc7933bf90f3becdf7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3577bf250e9110428ff34f518fbd9f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c7964643c861ccf5aee9b7fe67cf1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
9 . 已知双曲线
的离心率为2,它的一个焦点与抛物线
的焦点相同,那么该双曲线的渐近线方程为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290a56449ad6dd65aec7525c94273f59.png)
您最近一年使用:0次
2016-12-03更新
|
1488次组卷
|
2卷引用:2016届吉林省实验中学高三上学期第一次模拟文科数学试卷
2012·吉林延边·一模
解题方法
10 . 若双曲线
的左右焦点分别为
、
,线段
被抛物线
的焦点分成
的两段,则此双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e464e56ccbc33ed31393e8bff32ac66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e48816bc504a9d03389e3e4637a049.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() |
您最近一年使用:0次