1 . 已知点
在抛物线
:
上,直线
:
与抛物线
有两个不同的交点.
(1)求
的取值范围;
(2)设直线
与抛物线
的交点分别为
,
,过点
作与
的准线平行的直线,分别与直线
和
交于点
和
(
为坐标原点),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cfb23a9e07213cb76990dbedfc7feca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5189b13afd79d1bbc748cfff5521ab96.png)
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2020-11-21更新
|
1005次组卷
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9卷引用:河南省焦作市2020—2021学年高三年级第一次模拟考试数学(理)试题
河南省焦作市2020—2021学年高三年级第一次模拟考试数学(理)试题河南省焦作市2020—2021学年高三年级第一次模拟考试数学(文)试题(已下线)考点41 直线与圆锥曲线的位置关系-备战2021年高考数学(理)一轮复习考点一遍过(已下线)考点39 直线与圆锥曲线的位置关系-备战2021年高考数学(文)一轮复习考点一遍过(已下线)调研测试三(B卷 滚动提升检测)-2021年高考数学(理)一轮复习单元滚动双测卷(已下线)调研测试四(B卷 滚动提升检测)-2021年高考数学(文)一轮复习单元滚动双测卷(已下线)热点10 解析几何-2021年高考数学【热点·重点·难点】专练(新高考)(已下线)黄金卷08-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(新高考专用)(已下线)专题13 解析几何中的范围、最值和探索性问题 第一篇 热点、难点突破篇(练)-2021年高考数学二轮复习讲练测(浙江专用)
2 . 已知点
,直线
上有两点E,F使
,点P在线段
的延长线上,且
.
(1)若
,求点P的轨迹方程;
(2)若在点P的轨迹上存在两点M,N,设
,
的夹角为
.
①若
,求证:直线
过定点,并求定点坐标;
②若
为锐角,求直线
与x轴交点横坐标的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba61ef91e5827a569ec11a681efa809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f4f873802a24e7756eeab918c9a1c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc057d685cf8438f1442276ebb194b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecff6005f926665a926c07ad62e0f032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef81458a023c95d4bda62369b648eeb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
(2)若在点P的轨迹上存在两点M,N,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6799b234237333b0efa331d98f0374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c968347eabbb636d20b607a3bcfe0ac3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b12fe9a4054ffbacca1b995751969a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
解题方法
3 . 如图,已知抛物线
的焦点为
,
为坐标原点,直线
与抛物线
相交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/90454f7c-9f4b-4b20-961e-97b23c25ba88.png?resizew=130)
(1)当
,
时,求证:
;
(2)若
,点
关于直线
的对称点为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f24e616b5a35ff372c78c1472f156ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/90454f7c-9f4b-4b20-961e-97b23c25ba88.png?resizew=130)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f06408895febc126c2ae409e807349c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f20bf927d76ca5c9679922cc89f489.png)
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4 . 已知抛物线y2=4x的焦点为F,△ABC的三个顶点都在抛物线上,
且
.
(1)证明:B,C两点的纵坐标之积为定值;
(2)设λ
,求λ的取值范围.
且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f900f36e2e1e8b59fc486d4b9d3ce18b.png)
(1)证明:B,C两点的纵坐标之积为定值;
(2)设λ
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658b5350c3d9811662ca8526364d5704.png)
您最近一年使用:0次
2019-12-09更新
|
77次组卷
|
5卷引用:【全国校级联考】华大新高考联盟2018届高三4月教学质量检测文科数学试题
【全国校级联考】华大新高考联盟2018届高三4月教学质量检测文科数学试题【全国百强校】河北省衡水市衡水中学2019届高三年级第二学期一模考试数学(文科)试题(已下线)专题9.7 抛物线-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破(已下线)专题9.7 圆锥曲线综合问题(练)-2021年新高考数学一轮复习讲练测(已下线)专题9.9 圆锥曲线的综合问题(讲)-浙江版《2020年高考一轮复习讲练测》
名校
5 . 已知抛物线
(
),过点
(
)的直线
与
交于
、
两点.
(1)若
,求证:
是定值(
是坐标原点);
(2)若
(
是确定的常数),求证:直线
过定点,并求出此定点坐标;
(3)若
的斜率为1,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df40ba57bb5819b4aaa38d514500052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8293156150e4eb50a1bdd71090917dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff82ebdfad5e7de1c7487b0b817a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e311ee0b5085e7e5a45c606daa5d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a14487af3edf2adb05a82930f89464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658aa70a197c830aa765f2f7ea4c86c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce89094ce3a606d96317b04224a0bf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2dc4748d0f26325e60328c50466384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-11-15更新
|
381次组卷
|
2卷引用:上海市格致中学2019-2020学年高三上学期期中数学试题
名校
6 . 已知椭圆
的右焦点是抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff739204ba760216f82a5802e92cb244.png)
的焦点,直线
与
相交于不同的两点
.
(1)求
的方程;
(2)若直线
经过点
,求
的面积的最小值(
为坐标原点);
(3)已知点
,直线
经过点
,
为线段
的中点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a39c1cf47bf88d8b4ba8f7879fb942a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff739204ba760216f82a5802e92cb244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1917c490df6cf64f01105fca62ceb8eb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c386efbf65e3e26bcd83b68aa97d04fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c986804bf3015303e0dc22ce77e3acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffee0e2f990224ad472c705b2076ba70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bf554d005d0858f819d383d7e7802f.png)
您最近一年使用:0次
2020-01-07更新
|
702次组卷
|
6卷引用:上海市闵行区2017-2018学年高三上学期期末质量调研数学试题
上海市闵行区2017-2018学年高三上学期期末质量调研数学试题2018届上海市闵行区高三一模数学试题(已下线)卷01-备战2020年新高考数学自学检测黄金10卷-《2020年新高考政策解读与配套资源》(已下线)2021年全国高考乙卷数学(文)试题变式题20-23题陕西省西安中学2022届高三下学期第一次仿真考试文科数学试题上海市闵行区北京外国语大学附属上海闵行田园高级中学2024届高三上学期期中数学试题
7 . 设抛物线
的焦点为F,直线
与抛物线W相交于A,B两点,点Q为线段AB的中点.
(1)求m的取值范围;
(2)求证:点Q的纵坐标为定值;
(3)若
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01497894422204f9e205d832e21aa29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
(1)求m的取值范围;
(2)求证:点Q的纵坐标为定值;
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a601bb181415cf349821d76fc63668.png)
您最近一年使用:0次
名校
8 . 如图,在平面直角坐标系
中,已知直线
:
,抛物线
:
(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/c391dded-0a04-414a-86b0-1fb24ee04bcf.png?resizew=121)
(1)若直线
过抛物线
的焦点,求抛物线
的方程;
(2)已知抛物线
上存在关于直线
对称的相异两点
和
.
①求证:线段PQ的中点坐标为
;
②求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09324568f2f3995b2f932e66ee5926ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/c391dded-0a04-414a-86b0-1fb24ee04bcf.png?resizew=121)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
①求证:线段PQ的中点坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3028891de3630a49a2b1e7582aee46e.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2019-01-06更新
|
832次组卷
|
2卷引用:【市级联考】江苏省苏北四市2019届高三第一学期期末考试考前模拟数学试题
9 . 如图,点
在抛物线
外,过点
作抛物线
的两切线,设两切点分别为
,
,记线段
的中点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/cd1301e1-700e-4892-9621-31486b266dca.png?resizew=165)
(Ⅰ)求切线
,
的方程;
(Ⅱ)证明:线段
的中点
在抛物线
上;
(Ⅲ)设点
为圆
上的点,当
取最大值时,求点
的纵坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c190e3498ab082d575c24a1a66b6da0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794600957c18149736ae62787564ed12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4baa70686f842db69c1de877855cfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/cd1301e1-700e-4892-9621-31486b266dca.png?resizew=165)
(Ⅰ)求切线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(Ⅱ)证明:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅲ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd58b2487606b217a2786944136ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c789e464d8889b6f77d9fe0ccb09ddd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2019-02-04更新
|
522次组卷
|
2卷引用:【校级联考】浙江省宁波市九校2018-2019学年高二第一学期期末联考数学试题
11-12高二下·辽宁大连·期中
名校
解题方法
10 . 如图所示,直线
与抛物线
交于
两点,与
轴交于点
,且
,
(1)求证:点
的坐标为
;
(2)求证:
;
(3)求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.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/77d681a7a9830fe11598654e141aa28e.png)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://img.xkw.com/dksih/QBM/2018/1/3/1852660358438912/1853172702126080/STEM/35dca44a68d945a9b7154d43765efc44.png?resizew=278)
您最近一年使用:0次
2018-01-04更新
|
551次组卷
|
4卷引用:2011-2012学年辽宁省庄河六中高二下学期期中考试文科数学试卷
(已下线)2011-2012学年辽宁省庄河六中高二下学期期中考试文科数学试卷福建省莆田第九中学2017-2018学年高二上学期第二次月考(12月)数学(文)试题吉林省吉化第一高级中学校2019-2020学年高二上学期期末数学(理)试题安徽省滁州市定远县育才学校2021-2022学年高二普通班上学期期末文科数学试题