如图,两条距离为4的直线都与y轴平行,它们与抛物线
和圆
分别交于
和
,且抛物线的准线与圆相切,则当
取得最大值时,直线
的方程为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d3bdf22aa1dcd1cf6d407aa40d09de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6cdd424b3ef519fe9a1ac430d2d199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe5351a50aac766f146acd1a9a6e79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/1/15/2636497949106176/2636564146348032/STEM/947c8c04-fad7-4a91-b465-7f0b98570c8a.png)
20-21高一·浙江·期末 查看更多[4]
(已下线)【新东方】双师112(已下线)黄金卷10-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(山东高考专用)江西省江西科技学院附属中学2021-2022学年高二12月月考数学(文)试题江西省江西科技学院附属中学2021-2022学年高二12月月考数学(理)试题
更新时间:2021-01-15 11:26:23
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【推荐1】已知集合M={(x,y)|x﹣3≤y≤x﹣1},N={P|PA≥
PB,A(﹣1,0),B(1,0)},则表示M∩N的图形面积为__ .
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【推荐2】已知圆系
,圆
过
轴上的定点
,线段
是圆
在
轴上截得的弦,设
,
.对于下列命题:
①不论
取何实数,圆心
始终落在曲线
上;
②不论
取何实数,弦
的长为定值1;
③不论
取何实数,圆系
的所有圆都与直线
相切;
④式子
的取值范围是
.
其中真命题的序号是________ (把所有真命题的序号都填上)
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①不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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②不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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③不论
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④式子
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其中真命题的序号是
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【推荐1】已知抛物线
(
)的焦点为
,过F作直线l交抛物线于M,N两点,则p=_______ ,
的最小值为______ .
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【推荐2】抛物线
的焦点
到准线的距离为2,过点
的直线与
交于
,
两点,
的准线与
轴的交点为
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的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38544c35c45a692f3f1c8dbcdb9db71e.png)
___________ .
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【推荐1】已知抛物线
的焦点为
,
,过
中点作斜率为
的直线
交抛物线于
两点,若
在线段
上运动时,
的面积的最小值为关于
的函数
,若
对所有满足题意的
恒成立,则
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【推荐2】直线
与抛物线
:
交于
,
两点,若
,
的斜率之积为
,则
的最小值为______ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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