1 . 给出下列四个命题:① 存在
,
;② 存在
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6803eb79cf1d90b6d566b178f4ce4768.png)
;③ 任意
,
;其中真命题的序号为________ (写出所有序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7f0406f806e634742d9436f9f35ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6803eb79cf1d90b6d566b178f4ce4768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f28be7acbf9319f676cef298d58f14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4908e3b4e523c042732ccb7c215aac99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308dfcb59b46d2b9d6e63f768267b668.png)
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2 . 下列说法中,正确的序号为___________ .
①命题“
”的否定是“
”;
②已知
,则“
”是“
或
”的充分不必要条件;
③命题“若
,则
”的逆命题为真;
④若
为真命题,则
与
至少有一个为真命题;
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca4ca1588eba01b231315b1c7d20a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bfe039612ffb5d60214d5d6045f4a.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34cfaf8a1aac11be28a46922184c08ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d087912775d73297b3614d3806ab29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc34a2d14b2f914017ae7b2a15ab60e.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bcddc2ece6bcde9355e222e1cf9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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3 . 下列说法不正确的是________ .(只填序号)
①
是
的必要条件;
②
是
的充分不必要条件;
③
是
且
的充分条件;
④
是
的充分不必要条件.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d54e72f2a8f5bf4a12f3328503afb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e9029d132adff5937610349c883287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16688590aa75a979cc269d934f1bf899.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34715101c66fa12ce6baf0a9c53f1672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0973815df3264c67f94eccde1c279ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200849ce71f53c0321506e27de437b8d.png)
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2023-08-28更新
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473次组卷
|
3卷引用:人教A版(2019) 必修第一册 数学奇书 学业评价(六) 充分条件与必要条件
解题方法
4 . 有下列命题:
①当
,且
时,函数
的图象恒过定点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
②
;
③幂函数
在
上单调递减;
④已知
,
,则
的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
其中正确命题的序号为______ (把正确的答案都填上)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624d044562db3ec39899fbdf2bc4c597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6edae66c45841732239fbc5d3cda88.png)
③幂函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd988a227f0bf3744b361558acc4ea8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3b744c4d7fbaf13e1d4789204f5dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
其中正确命题的序号为
您最近一年使用:0次
2021-01-20更新
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340次组卷
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2卷引用:天津市部分区2020-2021学年高一上学期期末练习数学试题
名校
5 . 定义一个集合
的所有子集组成的集合叫做集合
的幂集,记为
,用
表示有限集
的元素个数.给出下列命题:①对于任意集合
,都有
;②存在集合
,使得
;③若
,则
;④若
,则
;⑤若
,则
.其中所有正确命题的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b6f8cb2faaad82b53b2a66ee817a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d06cb03804abed6015be7b8c2eaf83f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d155ac82ede43de3a78c0e21ad8b1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc89dbec909e7cc1993a4428c2a11c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb493ec7ce294976af8a9dcf8c7b76a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1c5ac0da9e3a3d95e22a5231dac356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97be7d482888b030f7f8e0d75dbefcbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dcb88e461d0bb0707e404d7b9a7d0ca.png)
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6 . 给出下列命题:
①函数
是奇函数;
②存在实数
,使
;
③若
,
是第一象限角且
,则
;
④函数
在
上的值域为
;
⑤函数
的图象关于点
成中心对称.其中正确命题的序号为_________ .
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5508fb648f060f1128ed2a95b66c048.png)
②存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f7da37edc88e1c82456f2c6d072535.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90df641ab645927ee577e79faf18dcdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890105f677da9bf3d5483f5344065b35.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c20c28856587dc8cd4e0842a86709f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b67284ca9982944fd8bbe0a49102669.png)
⑤函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e13df8acedad03eb7d6f5f466332cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ebb7b00c8246c9a938bdbf40b4e7fe.png)
您最近一年使用:0次
2020-02-20更新
|
313次组卷
|
2卷引用:安徽省马鞍山市2019-2020学年高一上学期期末数学试题
20-21高一·全国·课后作业
7 . 下列说法不正确的是________ .(只填序号)
①“x>5”是“x>4”的充分条件;
②“xy=0”是“x=0且y=0”的充分条件;
③“-2<x<2”是“x<2”的充分条件.
①“x>5”是“x>4”的充分条件;
②“xy=0”是“x=0且y=0”的充分条件;
③“-2<x<2”是“x<2”的充分条件.
您最近一年使用:0次
8 . 已知“
是
的充分不必要条件”、“
是
的必要不充分条件”、“
是
的充要条件”,则①
是
的充分不必要条件;②
是
的充分不必要条件;③
是
的必要不充分条件;④
是
的必要不充分条件其中正确结论的序号为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
您最近一年使用:0次
2019-09-19更新
|
590次组卷
|
4卷引用:北师大版 新教材 2.1必要条件与充分条件2
北师大版 新教材 2.1必要条件与充分条件2北师大版 新教材 2.1必要条件与充分条件练习【新教材精创】1.2.1 必要条件与充分条件(2课时) 练习(2)-北师大版高中数学必修第一册(已下线)第一章 集合与常用逻辑用语(章末测试)-2020-2021学年一隅三反系列之高一数学新教材必修第一册(人教版A版)
9 . 对于任意实数
,①“
”是“
”的充分条件;②“
是无理数”是“
是无理数”的必要条件;③“
”是“
的充分条件;④“
”是“
”的必要条件,其中正确结论的序号为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c2c12e403e4dab34c0590455dc0ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5821f59d12217af9a3804379c8231f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241b9415a76164563eda432ad6e11f6f.png)
您最近一年使用:0次
2019-09-19更新
|
572次组卷
|
4卷引用:北师大版 新教材 2.1必要条件与充分条件2
北师大版 新教材 2.1必要条件与充分条件2北师大版 新教材 2.1必要条件与充分条件练习【新教材精创】1.2.1 必要条件与充分条件(2课时) 练习(2)-北师大版高中数学必修第一册(已下线)第一章 集合与常用逻辑用语(章末测试)-2020-2021学年一隅三反系列之高一数学新教材必修第一册(人教版A版)
10 . 给出下列说法:
①集合
用列举法表示为
;
②实数集可以表示为
为实数
或
;
③方程组
的解组成的集合为
.其中不正确的有______ .(把所有不正确说法的序号都填上)
①集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cdda8ab02ed0fb8fcb88afe25a21546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e579db390f938e41c45169ce4cdd805c.png)
②实数集可以表示为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2eb12f54c6a9fe0bc6245ade7163d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4ff49f14b5b6cc37fd866c5d81bf45.png)
③方程组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717ae5a0432a6fd6405d770c3ad64137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ac2880ae21f06ae72d3d19141223b8.png)
您最近一年使用:0次
2019-10-25更新
|
560次组卷
|
3卷引用:人教B版(2019) 必修第一册 必杀技 第一章 1.1.1集合及其表示方法
人教B版(2019) 必修第一册 必杀技 第一章 1.1.1集合及其表示方法人教A版(2019) 必修第一册 必杀技 第一章 1.1 集合的概念(已下线)第1讲 集合的概念-【新教材】2020新高一同步(初升高)衔接讲义(原卷+解析)