1 . 如图,在平面直角坐标系
中,点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4893dc7642b670dfd62a0c5f81fda144.png)
在抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/8c9e0ee5-05e2-4801-b52e-c682aa27ac24.png?resizew=156)
(1)求
,
的值;
(2)过点
作
垂直于
轴,
为垂足,直线
与抛物线的另一交点为
,点
在直线
上.若
,
,
的斜率分别为
,
,
,且
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4febf8c4b8e6fa7b1dc0086627298397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4893dc7642b670dfd62a0c5f81fda144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfcdc6e72e734c0d1ac4a1c529599165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75ed10db4b9747a4b6d865b774f6b6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/8c9e0ee5-05e2-4801-b52e-c682aa27ac24.png?resizew=156)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf434334b09cc0fdd4e86e84e6ceb00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7298e9172c5139222535dd653549b9b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
解题方法
2 . 选修4-4:坐标系与参数方程
在平面直角坐标系
中,点
,直线
与动直线
的交点为
,线段
的中垂线与动直线
的交点为
.
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/5c7dcadce0524bfcba9e3469f1ed2d22.png?resizew=160)
(1)求动点
的轨迹
的方程;
(2)过动点
作曲线
的两条切线,切点分别为
,
,求证:
的大小为定值.
在平面直角坐标系
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/5dd8defea03e4dd69269916d223ca162.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/8a5e15f7d3eb4151ba13ff312b8b3661.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/1e95ba1f00744834949c0fe5b9a7b681.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/24d25f94ee5a4414910f131795032db9.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/25d7fcdc7860487ebfa5190cec3f53ac.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/e1fb612d343745629312f21455777faa.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/24d25f94ee5a4414910f131795032db9.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/2e6f3ce053d94338ac3a1087ebdebf2f.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/5c7dcadce0524bfcba9e3469f1ed2d22.png?resizew=160)
(1)求动点
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/2e161489015f4341b11b903bc19776fd.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/929f1cf1b9444d76897b27ef61392e99.png?resizew=16)
(2)过动点
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/25d7fcdc7860487ebfa5190cec3f53ac.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/929f1cf1b9444d76897b27ef61392e99.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/656513f66f24446a80c4e5c369a7d49f.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/f565d7f8551d4fbdb225fb43209616e3.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/85af66ab5ec84b37ba9685fd6475cf18.png?resizew=51)
您最近一年使用:0次
名校
3 . 在平面直角坐标系
中,双曲线
与抛物线
有相同的焦点,则双曲线的两条渐近线的方程为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d79a9d7c59c061259eba07baded4941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1aeedf13cd06de69717474598ec6fe1.png)
您最近一年使用:0次
2020-01-23更新
|
72次组卷
|
3卷引用:2016届江苏南通市高三下学期第三次调研考试数学试卷
4 . 在平面直角坐标系xOy中,已知抛物线C:
的焦点为F,定点
.若射线FA与抛物线C 相交于点M,与抛物线C的准线相交于点N,则
的值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d888fc0c8084daf6c1960ea8d54bf31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2293c848832cfc6d7f76ba9bdd11ea3.png)
您最近一年使用:0次
解题方法
5 . 若抛物线
的焦点与双曲线
的右焦点重合,则双曲线的离心率为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914265c3123d1667de99703dfaf74d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d79a9d7c59c061259eba07baded4941.png)
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6 . 已知点
为抛物线
的焦点,该抛物线上位于第一象限的点
到其准线的距离为5,则直线
的斜率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
您最近一年使用:0次
2016-12-03更新
|
453次组卷
|
2卷引用:2016届江苏省苏北三市高三最后一次模拟考试数学试卷
名校
7 . 在平面直角坐标系
中,以直线
为渐近线,且经过抛物线
焦点的双曲线的方程是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10273b05ad8210d8db07639c4d149fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
您最近一年使用:0次
2016-12-03更新
|
485次组卷
|
2卷引用:2015届江苏省南通市高三第一次调研测试数学试卷
8 . 若抛物线
的焦点
与双曲线
的一个焦点重合,则
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3d43f947a16ffc21196f11222f8f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2010·广东·二模
9 . .已知点C(1,0),点A、B是⊙O:
上任意两个不同的点,且满足
,设P为弦AB的中点.(1)求点P的轨迹T的方程;(2)试探究在轨迹T上
是否存在这样的点:它到直线
的距离恰好等于到点C的距离?若存在,求出这样的
点的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08227ca941898eb34941f446ca8b1de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96e101e3b37f8ca92fb1cab590030f1.png)
是否存在这样的点:它到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32df158dd2d590af5646657afb0101.png)
点的坐标;若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/2012/2/28/1570780547768320/1570780553134080/STEM/7cb0f5a878b945ed800a358756cde397.png)
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2014·上海·二模
10 . 抛物线
的焦点到双曲线
的渐近线的距离是______________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1892b7c3cd7bea116f532f66fba44662.png)
您最近一年使用:0次