2008高三·天津·竞赛
1 . 如图,已知
的三边
的中点分别为
分别是
上的点,并满足
均平分
的周长,
分别是
关于
的对称点,
与
交于点
.若
,则
一定过
的.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/fa90f71b-738f-4f0e-aac3-bbe4d5962201.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746ee1515a178948b04f535705c6f738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0165b2b3ed40201f2054a1a975c683b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd6877751384616819a8ddeef96c4133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0da1f94cd38666cf340b690960b14193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034807c0881957fa19abc980723810bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc0f6aa0b8ec19dde4db21b3d214d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/fa90f71b-738f-4f0e-aac3-bbe4d5962201.png?resizew=151)
A.内心 | B.外心 | C.重心 | D.垂心 |
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2008高三·天津·竞赛
2 . 已知二次函数
.则方程
不同实数根的数目为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c962d7485825381801f1ebf56a37ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804c9cadb1f88ae4d408c94294ba5902.png)
A.1 | B.2 | C.3 | D.4 |
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2008高三·天津·竞赛
3 . 抛物线
的参数
满足
.则当
变动时,抛物线的顶点一定在上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0061463c5946d8aee4554db145c9589f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30f292c6a191ab1e67cd0764f650019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
A.抛物线 | B.双曲线 | C.圆或椭圆 | D.直线 |
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2007高三·天津·竞赛
4 . 排成一排的10名学生生日的月份均不相同.有
名教师,依次挑选这些学生参加
个兴趣小组,每名学生恰被一名教师挑选,且保持学生的排序不变,每名教师挑出的学生必须满足生日的月份是逐渐增加或逐渐减少的(挑选一名或两名学生也认为是逐渐增加或逐渐减少的),每名教师尽可能多地选学生.对于学生所有可能的排序,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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5 . 已知数列
满足
,对于所有正整数
,有
.
求使得
成立的最小正整数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb93df462dde10cc60418cbccaaeb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d620257b99ddd2d3a991398a9d9bace6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c87b4852488de32553db91e20af81b.png)
求使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92b24ce81c9cf40ec5ebc29fab671c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2007高三·天津·竞赛
6 . 已知
的外心为
,
,
为
的外接圆上且在
内部的任意一点,以
为直径的圆分别与
交于点
,
分别与
或其延长线交于点
.求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ee7149bd58649b5c8b84439e118e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d54431bbb28ebd98db5c1dc6083a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c862ba8f2917907e2924aeb9736b3ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace5e8c3769ad8f370c86f879246c174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c741cf8348e9fa4ee6894ac2c3ac6dad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3c7ba0963b2c01c7e886442bcceac9.png)
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2007高三·天津·竞赛
名校
7 . 在平面直角坐标系中定义点
之间的交通距离为
.
若
到点
的交通距离相等,其中,实数
满足
,则所有满足条件的点
的轨迹的长之和为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4541875c077689f4b220ff48fc23548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bea37e25ba5e11e5e2c428996f74e5a.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9a016fd7021b9e9625c8d5f0938ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de866f9c8a0faffac3c00c3da07822c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e647c14561826ba9e396acc5a3792c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cb750a6f55ccd26df7d55ca9ed7693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2018-12-23更新
|
456次组卷
|
5卷引用:2007年全国高中数学联赛天津赛区预赛试题
(已下线)2007年全国高中数学联赛天津赛区预赛试题2008年湖南省高中数学竞赛试题数学奥林匹克高中训练题_1772019年全国高中数学联赛甘肃省预赛上海市实验学校2018届高三上学期第四次月考数学试题
2007高三·天津·竞赛
8 . 设集合
,
,其中
是5个不同的正整数,且
,
.
若
中所有元素的和为256,则满足条件的集合
的个数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1752a1d13ec6a233405fce4d5af61d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e112fc26d4804ee18c811c32787bd823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c7a2c89be8c7c35e472c9c88b3f2138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1ccce8225324817b0577551956464f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f639e7c2cbb5a5f951c8401272439fe5.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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2007高三·天津·竞赛
9 . 方程
的不同非零整数解的个数为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41391b388b6f5448aec6db7b3fae6386.png)
您最近一年使用:0次