名校
1 . 已知命题p:存在x∈R,使tan x=3,命题q:
的解集是{x|
},现有以下结论:①命题“p且q”是真命题;②命题“p且¬q”是真命题;③命题“¬p或q”是假命题;④命题“¬p或¬q”是真命题.
其中正确结论的序号为____________ .(写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec81343880dbd3be071f4c7d3ff014a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2668e1a2b859af2eee60d412a460ea.png)
其中正确结论的序号为
您最近一年使用:0次
12-13高二上·甘肃武威·阶段练习
2 . 已知命题p:存在x∈R,使tan x=1,命题q:x2-3x+2<0的解集是{x|1<x<2},现有以下结论:
①命题“p且q”是真命题;②命题“p且¬q”是假命题;③命题“¬p或q”是真命题;④命题“¬p或¬q”是假命题.
其中正确结论的序号为________ .(写出所有正确结论的序号)
①命题“p且q”是真命题;②命题“p且¬q”是假命题;③命题“¬p或q”是真命题;④命题“¬p或¬q”是假命题.
其中正确结论的序号为
您最近一年使用:0次
2016-12-03更新
|
1351次组卷
|
8卷引用:河南省兰考县第二高级中学2021-2022学年高二上学期第三次考试数学试题
河南省兰考县第二高级中学2021-2022学年高二上学期第三次考试数学试题 (已下线)2012-2013学年甘肃武威六中高二12月学段检测理科数学试卷(已下线)章末质量检测1 常用逻辑用语-2018年数学同步优化指导(北师大版选修2-1)(已下线)2015高考数学一轮配套特训:1-3简单的逻辑联结词全称量词与存在量词(已下线)2019高考备考一轮复习精品资料 【文】专题三 简单的逻辑联结词 押题专练(已下线)2019高考热点题型和提分秘籍 【理数】专题3 逻辑联结词、全称量词与存在量词 (题型专练)(已下线)2019高考热点题型和提分秘籍 【文数】专题3 逻辑联结词、全称量词与存在量词( 题型专练)(已下线)专题1.3 简单的逻辑联结词、全称量词与存在量词(精测)-2021届高考数学(理)一轮复习讲练测
20-21高二·江苏·单元测试
解题方法
3 . 以下几种说法
①命题“∃a>0,使函数f(x)=ax2+2x﹣1只有一个零点”为真命题
②命题“已知x,y∈R,若x+y≠3,则x≠2或y≠1”是真命题
③“x2+2x≥ax在x∈[1,2]恒成立”等价于“对于x∈[1,2],有(x2+2x)min≥(ax)max”
④△ABC的内角A,B,C的对边分别为a,b,c,则“a>b”是“cos2A<cos2B”的充要条件.
其中说法正确的序号为( )
①命题“∃a>0,使函数f(x)=ax2+2x﹣1只有一个零点”为真命题
②命题“已知x,y∈R,若x+y≠3,则x≠2或y≠1”是真命题
③“x2+2x≥ax在x∈[1,2]恒成立”等价于“对于x∈[1,2],有(x2+2x)min≥(ax)max”
④△ABC的内角A,B,C的对边分别为a,b,c,则“a>b”是“cos2A<cos2B”的充要条件.
其中说法正确的序号为( )
A.①③ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
名校
4 . 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)
您最近一年使用:0次
5 . 已知命题
:存在
,
;命题
:任意
.给出下列结论:
①命题“
且
”是真命题;
②命题“
且
”是假命题;
③命题“
或
”是真命题;
④命题“
或
”是假命题.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070054c0b4182ab7399ed56925844e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa7008bf62e50fb91eebe314103236f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81741f3452b6edb1687442016fd6326d.png)
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
②命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
③命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
④命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
其中所有正确结论的序号为( )
A.②③ | B.①④ | C.①③④ | D.①②③ |
您最近一年使用:0次
名校
6 . 有以下结论:
①若函数
对任意实数
都有
,则
图象关于直线
对称;
②函数
与
的图象关于直线
对称;
③对于函数
(
,且
)图象上任意两点
,
,一定有
;
④
是使得
(
且
)成立的充分不必要条件.
其中正确结论的序号为_________ .
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc49dbf58e19d1f890c704c67da542a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290dfa43bcecc055837374f00dce6fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67fbb13f7d4b8abb69b93a398fb66ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
③对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ff35f3b50966a5e3cbb0b5977af7e3.png)
![](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/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7a1783349936cc7254a4a8694c6812.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4175a7316c311be8544ad68a0a9fcf77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
其中正确结论的序号为
您最近一年使用:0次
20-21高二下·江西萍乡·期中
解题方法
7 . 曲线
关于
轴、
轴和直线
均对称,集合
.下列命题:①若
,则
;②若
,则
中至少有
个元素;③
中元素的个数一定为偶数;④若
,则
.其中正确命题的序号为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbbf52d1f9d61b41bdd4acfc9fac268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52946e1b1806ec5596e1d18ef756fbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d1124c40e343fb4a314f029b9dd949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89698a558783c987a70c993b21bdf11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49d8a90877b5d0d03493c9866efe15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ff2bbf0b97a626b951c069e52b4630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbeda83759d16869096f997e902befe.png)
您最近一年使用:0次
名校
8 . 现给出五个命题:
①
,
;
②
;
③
;
④
的最小值等于4;
⑤若不等式
对
都成立,则
的取值范围是
.
所有正确命题的序号为______
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cdab65718a2348c2339da2ed817edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61873626c729b6ffb54ab57f443ca7f1.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805b980c5b4364b1dd46ec867876ce0c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb1214e2343ec1b743c85095ef252d3.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25df771e19cb89dfef424b0da43affbb.png)
⑤若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed90eacae8a693dcf21d7dcceb09c76e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a9d91ab6c15386c106f9dbbf0a5170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650b4b77c199d97a5b133b5dd5d9fbcb.png)
所有正确命题的序号为
您最近一年使用:0次
2020-07-13更新
|
202次组卷
|
4卷引用:第1章 常用逻辑用语(提高卷)-2020-2021学年高二数学课时同步练(苏教版选修2-1)
(已下线)第1章 常用逻辑用语(提高卷)-2020-2021学年高二数学课时同步练(苏教版选修2-1)黑龙江省牡丹江市第一高级中学2019-2020学年高二7月月考(期末)数学(文)试题黑龙江省牡丹江一中2019-2020学年高二(下)期末数学(文科)试题(已下线)单元卷 常用逻辑用语(提高卷)-2020-2021学年高二数学课时同步练(苏教版选修1-1)
名校
9 . 下列说法中错误的是__________ (填序号)
①命题“
,有
”的否定是“
”,有
”;
②已知
,
,
,则
的最小值为
;
③设
,命题“若
,则
”的否命题是真命题;
④已知
,
,若命题
为真命题,则
的取值范围是
.
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281b260fe94c42258b7fa8c6bc6cefa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9c2681fd202657c6d22201b738d19c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fdcb0d7eda2baefa352f1a01e6acbdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44d098a68a65c8c2b6c058cb17a903b.png)
②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/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf35d6c316d9a014327ed3fdfeec374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3df1ec9f4cc08c367980b39a931785.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34715101c66fa12ce6baf0a9c53f1672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c988d709ba8cd8aed6cb83d76c0ba89c.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b598308dce900e042d195d6fa0ab67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a6c2a598b6168200d5261996b8e3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ba30151cfe5b33816cb59c11589e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e93d6bae5b58d23fb85b8f54998da17.png)
您最近一年使用:0次
2018-02-07更新
|
2134次组卷
|
5卷引用:宁夏青铜峡市高级中学2020-2021学年高二6月月考数学(文)试题
10 . 以下关于命题的说法正确的有______ (填写所有正确命题的序号).
①“若
,则
”是真命题;
②命题“若
,则
”的否命题是“若
,则
”;
③命题“若
,
都是偶数,则
也是偶数”的逆命题为真命题;
④命题“若
,则
”与命题“若
,则
”等价.
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2c58e340ebcea00ef2a6d05a836301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3019b662e5dc2750bb6f9199d3250f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
④命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582ad43edf388c096e7704d92340bf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5286186cb58bf265a2a96e5195d88d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab92728b35ed5798e07a2b0095bfcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27dd329517f0dd8f1d0dfade6138ed4.png)
您最近一年使用:0次