1 . 若点P在抛物线y=x2上,点Q在圆x2+(y﹣4)2=1上,则|PQ|的最小值是
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
解题方法
2 . 过双曲线
的左焦点
作圆
的切线,切点为
,延长
交抛物线
于点
,
为坐标原点,若
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04add41d4f548a8cca7e06703c8f2d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4be819fc47b2aa19ab2022b3dfeb6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c57b07f75e97d9f84718bd495ebcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae6433125ae380b1ba0c41a146ab004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba2e4666eb8f2e77bd14fae50364ba6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
3 . 如图,抛物线
与椭圆
在第一角限的交点为
,
为坐标原点,A为椭圆的右顶点,
的面积为
.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580236738560/1572580243062784/STEM/a6348845-355e-4cc9-9059-1f11e45461c9.png?resizew=195)
(1)求抛物线
的方程;
(2)过A点作直线
交
于
、
两点,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c156c3b344e637b4f86404f2711940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883f85506fa4d4171c03efa9500e6c0d.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/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41bbced6026f9512afa005638c6e5c4.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572580236738560/1572580243062784/STEM/a6348845-355e-4cc9-9059-1f11e45461c9.png?resizew=195)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)过A点作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
您最近一年使用:0次
2016-12-04更新
|
799次组卷
|
2卷引用:2015-2016学年山西怀仁一中高二下第一次月考文科数学卷
4 . 过抛物线x2=2py(p>0)的焦点F作倾斜角为30°的直线,与抛物线分别交于A,B两点(点A在y轴左侧),则
=_____ .
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533498355712/1572533504368640/STEM/1e5f44f916464077aa9f90da80146579.png?resizew=34)
您最近一年使用:0次
5 . 已知P为抛物线y2=4x上一个动点,Q为圆x2+(y﹣4)2=1上一个动点,那么点P到点Q的距离与点P到抛物线的准线距离之和的最小值是
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
221次组卷
|
2卷引用:2015-2016学年山西省曲沃中学高二12月月考文科数学试卷
解题方法
6 . 已知椭圆
的中心为坐标原点,离心率为
,
的右焦点与抛物线
的焦点重合,
是
的准线与
的两个交点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21b82181bf5d8655b7e818025ef86e9.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7366f83ba433cd87ff9a6f88087e58d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21b82181bf5d8655b7e818025ef86e9.png)
您最近一年使用:0次
7 . 过抛物线
的焦点作直线交抛物线于
两点,若
,则![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490722816/STEM/15152de68ebc4a0d823d8411d84421ce.png?resizew=63)
_________ .
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490722816/STEM/31723ece9ef64e85b144d772c39df52e.png?resizew=55)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490722816/STEM/ff4fdf7b46804220ab92b5f762aea228.png?resizew=136)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490722816/STEM/136aadf7227c47c99054a059645aaad8.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490722816/STEM/15152de68ebc4a0d823d8411d84421ce.png?resizew=63)
您最近一年使用:0次
2016-12-04更新
|
279次组卷
|
2卷引用:2015-2016学年山西忻州一中高二上学期期末文科数学试卷
8 . 已知抛物线
的顶点在坐标原点,准线方程为
,直线
与抛物线
相交于
两点.若线段
的中点为
,则直线l的方程为
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490690048/STEM/a4a795a1f40d43e2ba36ebb49e8c3bc7.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490690048/STEM/39a0626115d242068b78612d0c0e2969.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490690048/STEM/72231ae0a80f42bdb22b7c2c234137e9.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490690048/STEM/a4a795a1f40d43e2ba36ebb49e8c3bc7.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490690048/STEM/7287886019ca49c48fc2c7323162ed30.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490690048/STEM/e9f06adff3a64decb6b8a26f9be3205e.png)
![](https://img.xkw.com/dksih/QBM/2016/3/2/1572513484677120/1572513490690048/STEM/4a8107f1e7cb45d1adb04c45bbe501a8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 抛物线
的准线方程是
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572496025911296/1572496031186944/STEM/a81ded8210184510b3c4fe6b8fb2c067.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 在平面直角坐标系
中,
是抛物线
的焦点,圆
过
点与
点,且圆心
到抛物线
的准线的距离为
.
(1)求抛物线
的方程;
(2)已知抛物线上一点
,过点
作抛物线的两条弦
和
,且
,判断直线
是否过定点?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知抛物线上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5119b4a5b2276fbc0faf3b660bc90889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21402367709de8a3cb28d3444d33a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次