1 . 抛物线y=-4x2上的一点M到焦点的距离为1,则点M的纵坐标是
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
|
214次组卷
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2卷引用:陕西省西安市户县第四中学2022-2023学年高二上学期期中文科数学试题
2 . 抛物线
上有两点
到焦点的距离之和为
,则
到
轴的距离之和为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-02-16更新
|
469次组卷
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2卷引用:河南省豫南九校2016-2017学年高二下学期期中联考数学(文)试题
11-12高二上·广东东莞·期末
名校
3 . 设抛物线
上一点
到直线
的距离是
,则点
到该抛物线焦点的距离是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2011/2/19/1570000726417408/1570000731324416/STEM/dc7de2b477164c9bb49b1102168bcd13.png)
![](https://img.xkw.com/dksih/QBM/2011/2/19/1570000726417408/1570000731324416/STEM/7b0d0b3991804dad953ac1e663965016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.12 | B.8 | C.6 | D.4 |
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名校
4 . 已知双曲线
的左、右焦点分别为
,
,点
与抛物线
的焦点重合,
与
在第一象限相交于点P.若
,则
的渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42a960d9c62f797d46caa7a8a4a134a.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0107aa23cf707446f947fa236421c1f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a816516fe1813065b4e001e4d2fb57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 过抛物线
的焦点作直线交抛物线于P,Q两点,若线段PQ中点的横坐标为2,
,则抛物线方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dac74d284359d976d9798642a2c752.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
6 . 已知抛物线
的焦点为
,点
,若点
为抛物线上任意一点,当
取最小值时,点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1282cc43ebf4b459832fec04d805989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2f98670913d4105454f49caba53a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 已知抛物线
上一点
到焦点的距离是6,则其准线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fbe5e2918d2ce11efeb6c59d0c68df9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 已知抛物线C:
的焦点为F,准线为
.点A在抛物线C上,点B在准线
上,若
是边长为4的等边三角形,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6d8eaacc2d999b37209feba103f9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4139b091e9dc432b267ff68420c77de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.2 | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知点
在抛物线
上,则点
到其焦点
的距离
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1647bfb0db3a7d49d2132a1cf83c0340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58441a979119f698e51a0019c0b8cac.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/4cd05d243091ba3ec8da3d33fc5956e2.png)
A.7 | B.8 | C.9 | D.10 |
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