已知平面直角坐标系中点
和直线
,动圆
过点
且与直线
相切.
(1)求
的轨迹
的方程;
(2)过点
作斜率为1的直线
交曲线
于
两点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28062ef6b7d6fa9e539d0f0b7571b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
(2)过点
![](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/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
12-13高二上·广东汕头·期末 查看更多[1]
(已下线)2011-2012学年广东省汕头市金山中学高二第一学期期末考试理科数学试卷
更新时间:2016-12-01 17:00:54
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相似题推荐
【推荐1】已知抛物线C:y2=2px(p>0)的焦点为F,点P(t,﹣2)在C上,且|PF|=2|OF|(O为坐标原点).
(1)求C的方程;
(2)若A,B是C上的两个动点,且A,B两点的横坐标之和为8,求当|AB|取最大值时,直线AB的方程.
(1)求C的方程;
(2)若A,B是C上的两个动点,且A,B两点的横坐标之和为8,求当|AB|取最大值时,直线AB的方程.
您最近一年使用:0次
【推荐2】已知
是抛物线
的焦点,直线
交拋物线于
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/d9e5f5d1-7a86-4d0c-9b28-9a5d5fb67bde.png?resizew=112)
(1)若直线
过点
且
,求
;
(2)若
平分线段
,求直线
的方程.
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(1)若直线
![](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/e838a2ce7c9fb22e6ffb862638ed0599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb54c4990f7725e9fb6ae5ad3ddd732c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知抛物线
,过其焦点作斜率为1的直线
交抛物线
于
、
两点,且
.
(1)求抛物线
的方程;
(2)已知动圆
的圆心在抛物线
上,且过定点
,若动圆
与
轴交于
、
两点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2be214276d4457d4ffbb2af399efa0a.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知动圆
![](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/f7bbb2a23bb28d443062ae3e1a30b1be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知抛物线
的焦点为
,
轴上方的点
在抛物线上,且
,直线
与抛物线交于
,
两点(点
,
与
不重合),设直线
,
的斜率分别为
,
.
(1)求抛物线的方程;
(2)已知
,
:
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed5cf0b4c918b2795034e5b2b53cd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e16d691397d33e3c814d43e167384d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7af88fa4d520e50e7904f04cb30bde.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)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(1)求抛物线的方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d53e4863069524d310699691da364dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次