名校
1 . 已知直线
,抛物线
图像上的一动点到直线
与它到抛物线准线距离之和的最小值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3febdcc0ed484109e573df8f1609b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2020-01-15更新
|
655次组卷
|
2卷引用:天津市和平区第一中学2019-2020学年高二上学期期末数学试题
名校
2 . 设抛物线
(
)的焦点为
,准线为
.过焦点的直线分别交抛物线于
两点,分别过
作
的垂线,垂足为
. 若
,且三角形
的面积为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f8f333303816ff66e3aa44bcf97268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14eec658f69c267a70c1e8f9b744e282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2019-02-14更新
|
710次组卷
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4卷引用:【校级联考】天津市七校(静海一中、宝坻一中、杨村一中等)2018-2019学年高二上学期期末考试数学试题
14-15高二上·广东汕头·期末
3 . 抛物线
的方程为
,过抛物线
上一点
(
)作斜率为
的两条直线分别交抛物线
于
两点(
三点互不相同),且满足
(
且
).
(1)求抛物线
的焦点坐标和准线方程;
(2)设直线
上一点
,满足
,证明线段
的中点在
轴上;
(3)当
=1时,若点
的坐标为
,求
为钝角时点
的纵坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937104896/STEM/b07381796056471fbe07e66afbd64ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f6b55387d2b5941bee6bde9057bed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01225eca2322a6136314dedadcafa994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5562172a5f895488fbe0b1e5cc5e988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c3052e195dff86b79f92365202ea55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3379f2d6530aa066293d323752748bfb.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937104896/STEM/3b40cfd054d746a3a07bd76f79915a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)当
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937104896/STEM/4a4c33b83f0b4ebdb312a865f3f9b42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193d1f81ec33e9c6126cbb65348f0480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68115035f191ab39f0ae08d0a81cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937104896/STEM/8e271645e5de46a28d2933b7c9aebe11.png)
您最近一年使用:0次
2016-12-02更新
|
1885次组卷
|
4卷引用:2005年普通高等学校招生考试数学(文)试题(天津卷)
2005年普通高等学校招生考试数学(文)试题(天津卷)2005年普通高等学校招生考试数学(理)试题(天津卷)(已下线)2013-2014学年广东汕头金山中学高二上学期期末理科数学试卷(已下线)2013-2014学年广东汕头金山中学高二上学期期末理数学卷