1 . 设
为两个不同的点,直线l:ax+by+c=0,
.有下列命题:
①不论
为何值,点N都不在直线l上;
②若直线l垂直平分线段MN,则
=1;
③若
=-1,则直线l经过线段MN的中点;
④若
>1,则点M、N在直线l的同侧且l与线段MN的延长线相交.
其中正确命题的序号是__________ (写出所有正确命题的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2c3c28e400c9ede343fd8bd7f10b28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d65c73b4d498cf772db92a43c4b6fff.png)
①不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700458c01a7ad031e27d80ed43e9e882.png)
②若直线l垂直平分线段MN,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700458c01a7ad031e27d80ed43e9e882.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700458c01a7ad031e27d80ed43e9e882.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700458c01a7ad031e27d80ed43e9e882.png)
其中正确命题的序号是
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名校
2 . 对于集合M,定义函数fM(x)=
对于两个集合A,B,定义集合A*B={x|fA(x)
fB(x)=-1}.已知A={2,4,6,8,10},B={1,2,4,8,12},则用列举法写出集合A*B的结果为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9db981b2688b489924e5bd6fa1d6c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b18d78c40ce368f60208949c5ae3fb.png)
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2016-12-04更新
|
387次组卷
|
5卷引用:2016届河北省定州中学高三下周练一数学试卷
3 . 现定义一种运算“
”:对任意实数a,b,
.设
,若函数
的图象与x轴恰有三个公共点,则实数k的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c447aae1476a22a49a145a9215863970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e1ada827b9b83d2594321973da8d32a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba6fbbaf0854386927c3765d254ffe2.png)
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4 . 若三个非零且互不相等的实数
,
,
满足
,则称
,
,
是调和的;若满足
,则称
,
,
是等差的,若集合
中元素
,
,
既是调和的,又是等差的,则称集合
为“好集”,若集合
,集合
,则(1)“好集”
中的元素最大值为_____ ;(2)“好集”
的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9441b9ef89b66a2f7821c0f57d3ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02746ec8e4220d8b4a174d5e9a711ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f633dedbebb8249daf929c0a96e9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17fab19008d7de7f55d3f8a31447bca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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5 . 若
是一个非空集合,
是一个以
的某些子集为元素的集合,且满足:
(1)
;
(2)对于
的任意子集
,当
时,
,
.
则称
是集合
的一个“
集合类”,例如:
是集合
的一个“
集合类”,已知集合
,则所有含
的“
集合类”的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f33be18edd2c1e71f00b37f20ce585.png)
(2)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3dce7dc84fe7cb0feff2545df1cddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799521a9ffedea459daf2aa46ad19691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773df698bab849bdd0bf254ba2e57a3a.png)
则称
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9ac6bff34bf90d8f8b145315df55ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28e7f8d7b4e293adb41faf43eeb8bd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5c073137c7a5dc32c9376667417a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9ac6bff34bf90d8f8b145315df55ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5c073137c7a5dc32c9376667417a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c7e50f57c88aa5d10676c5e16e4756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9ac6bff34bf90d8f8b145315df55ce.png)
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6 . 设
为非空实数集,若
,都有
,则称
为封闭集.
①集合
为封闭集;
②集合
为封闭集;
③若集合
为封闭集,则
为封闭集;
④若
为封闭集,则一定有
.
其中正确结论的序号是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab34536d2a601b48c5ebfb135f5f4d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1ac9dccaeb12e5bc789b9a03eeed07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
①集合
![](https://img.xkw.com/dksih/QBM/2015/10/28/1572272679182336/1572272685162496/STEM/4a22051f8a32446c9453364a010ddedb.png?resizew=141)
②集合
![](https://img.xkw.com/dksih/QBM/2015/10/28/1572272679182336/1572272685162496/STEM/ead7bdff2e5e4abf8c7a3ec2313f0a4c.png?resizew=144)
③若集合
![](https://img.xkw.com/dksih/QBM/2015/10/28/1572272679182336/1572272685162496/STEM/15b4cf81e90d4d4ab655a074df39a8ef.png?resizew=42)
![](https://img.xkw.com/dksih/QBM/2015/10/28/1572272679182336/1572272685162496/STEM/98d13512bf744dc483191a5774f45b14.png?resizew=54)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2faf3937abcb6a59071c17bc6bb10f6.png)
其中正确结论的序号是
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解题方法
7 . 设函数
的定义域为
,如果存在正实数
,对于任意
都有
,且
恒成立,则称函数
为
上的“
型增函数”,已知函数
是定义在
上的奇函数,且当
时,
,若
为
上的“
型增函数”,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54804b8b9e80640443387ac61c5ed6e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f406979775d7d311a79b2e15fb5f29ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faca4301cd851ef964caecf1898e6849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd42219202daa9556d6eb1c29db1b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6241896e3bb87fa99d76eb2674ce2256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 设Sn是数列{an}的前n项和,若
(n∈N*)是非零常数,则称数列{an}为“和等比数列”.若数列
是首项为2,公比为4的等比数列,则数列{bn}__________ (填“是”或“不是”)“和等比数列”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a3dab80709d7a4798633a904e1323d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d14515a25bb3b05b9da63e4fbc6e7878.png)
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9 . 将数列
按“第
组有
个数”的规则分组如下:
,
,
,…,则第10组中的第一个数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deca922f74f28aa9ab391cb0202a31a1.png)
![](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/4cf1693d7d386d92a5ab540f194251cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40d31259e3d90d046b2ba32f9b00afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61daea58c4ba74856816e1c2722fb5b.png)
您最近一年使用:0次
2016-12-03更新
|
570次组卷
|
3卷引用:2015届陕西省西工大附中高三下学期模拟考试一文科数学试卷
真题
名校
10 . 一个二元码是由0和1组成的数字串
,其中
称为第
位码元,二元码是通信中常用的码,但在通信过程中有时会发生码元错误(即码元由0变为1,或者由1变为0)
已知某种二元码
的码元满足如下校验方程组:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55063c18de3d96a4bfd37394d7f2ad6a.png)
其中运算
定义为:
.
现已知一个这种二元码在通信过程中仅在第
位发生码元错误后变成了1101101,那么利用上述校验方程组可判定
等于 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc0ca784db2dab601a41af6c9a7dcd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c369391010b98199fce5a24efd418e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
已知某种二元码
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a27728af6c3000fc1dddb59c92cdddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55063c18de3d96a4bfd37394d7f2ad6a.png)
其中运算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9116e77c6ad4b1dbdbe1870c14c8b48e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944457bb593663edca46b74c3e3d466f.png)
现已知一个这种二元码在通信过程中仅在第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-03更新
|
1684次组卷
|
4卷引用:2015年全国普通高等学校招生统一考试理科数学(福建卷)
2015年全国普通高等学校招生统一考试理科数学(福建卷)上海市复旦大学附属中学2018-2019学年高三上学期10月月考数学试题(已下线)第一篇 代数与近世代数 专题2 群、环、域等新定义问题 微点1 群、环、域等新定义问题(已下线)专题12 简易逻辑与推理(理科)