1 . 下列四个命题:
①命题“若
,则
”的逆否命题为“若
,则
”;
②若“
或
”是假命题,则“
且
”是真命题;
③若
:
,
:
,则
是
的充要条件;
④已知命题
:存在
,使得
成立,则
:任意
,均有
成立;
其中正确命题的序号是___________ .
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c581913b2d08b871608e939f29cb24b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059eafaba1bb419030b566813c5bb04a.png)
②若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b266eb25cd92b5952e79651d656b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d629f15cac7d8c3cb9db7bc464474b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
④已知命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba05bd022040d172f2f63ad429b7a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b652287dd232f8c16d980143eaf8361.png)
其中正确命题的序号是
您最近一年使用:0次
20-21高二·全国·假期作业
2 . 已知命题
:
;命题
:
,若
是真命题,则
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d8a600e7b6a10eeb9f96c3462cf35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d836f8cd8f2ecd0508a1b6fcc26ee37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a379bc38efea1e08f57cd1df13284f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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3 . 已知命题p:x2﹣6x+8<0,命题q:0<x<3.若“p∧q”为真命题则实数x的取值范围是_____ .
您最近一年使用:0次
2020-03-16更新
|
157次组卷
|
2卷引用:湖南省湘西州2018-2019学年高二上学期期末数学(理)试题
2019高二上·全国·专题练习
名校
4 . 已知命题p:若
,则
,命题q:若
,则
.在命题①
;②
;③
;④
中,假命题的是______________ .(填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21208364124b5c477b2ff8df1c2e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8057b0ca85ca251c5e8337f5f2357b62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21208364124b5c477b2ff8df1c2e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8073266cfa99b04190473d16b615a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e48ebdd742cb5d310c21a384d599bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6777065ed14d76944be5cb45d9e2c76.png)
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5 . 已知命题p:
,
,q:
,
,则在命题
;
;
;
中,真命题的个数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511a12f75b3a170b54366d51caf098b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff508dbffa62a8277244621072baf81e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df882a757ebc04ffdb3437cb281bbb80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e60a03a4fe871fcd3a77438fbfdbae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f715171f2d195932394d794f27dc516e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00e667135c6a91b6b00dc5662aca01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cccdad1514aeb0e68ff2749c7520e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e99f94596210804cb730f6e2c7f61ee.png)
您最近一年使用:0次
名校
6 . 命题“若
,则
或
”的否定为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3019b662e5dc2750bb6f9199d3250f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
您最近一年使用:0次
2019-07-16更新
|
698次组卷
|
4卷引用:2016-2017学年湖北省重点高中联考协作体高二下学期期中考试数学(理)试卷
名校
7 . 已知命题
方程
有两个不等的实根;命题
方程
无实根,若“
”为真,“
”为假,则实数
的取值范围为___________ .(写成区间的形式)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30093371957cc3d85050dffb500bd72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23883e808a37c6a5cb97135ae52ff429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba61bb1a5f689b6f247d2c01d35e1c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e6cc5ac30d1cb123d3427afb852ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d426f0f57b67c00ab87e81c9d1d5ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094543346d88c4ed45c1b1fb91f5265b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-12-20更新
|
528次组卷
|
3卷引用:广东省广州市第二中学2018-2019学年高二上学期期中考试数学文试题
广东省广州市第二中学2018-2019学年高二上学期期中考试数学文试题安徽省滁州市定远县重点中学2020-2021学年高二上学期期末数学(文)试题(已下线)第2章+常用逻辑用语单元测试(基础卷)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第一册)
8 . 命题
:直线
与直线
垂直;命题
:异面直线在同一个平面上的射影可能为两条平行直线,则命题
为____ 命题(填真或假).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c204834608f1a8fba15747210dd7c5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ba9507faa6aaad768f19a0ebdad5a9.png)
您最近一年使用:0次
2016-12-03更新
|
515次组卷
|
2卷引用:2014-2015学年浙江省江山实验中学高二1月教学质检理科数学试卷
14-15高二上·河南郑州·期末
9 . 已知命题:①
为两个命题,则“
为真”是“
为真”的必要不充分条件;②若
为:
,则
为:
;③命题
为真命题,命题
为假命题,则命题
都是真命题;④命题“若
,则
”的逆否命题是“若
,则
”.期中正确命题的序号是________ .
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/1bbe3e27af144eae988d09612ee20d35.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/48feb073716945bd9fcfeb437e7c9983.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/86b4cf97154746f1b1815596f56e87b2.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/0ac77639ef3f408e9331d5defead704a.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/837fd4da71b546769e11059473cffd02.png?resizew=122)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/78ae24cb35944eb2a0ebbab28bc92b90.png?resizew=23)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/f621c28445ed49a3abe68d69b57af0fc.png?resizew=124)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/0ac77639ef3f408e9331d5defead704a.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/5c8ccc310ff5433c9524cb074acfa244.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/673f07ee5ac64aaab55bf1440fa172aa.png?resizew=112)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/78ae24cb35944eb2a0ebbab28bc92b90.png?resizew=23)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/5c8ccc310ff5433c9524cb074acfa244.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/0ac77639ef3f408e9331d5defead704a.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2014/3/4/1571542370197504/1571542375677952/STEM/e1c4f33b76f347bc9f74c0837b0fb9b5.png?resizew=21)
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10-11高三·安徽·阶段练习
10 . 已知命题
恒成立,命题
为减函数,若
且
为真命题,则
的取值范围是_________
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570364254003200/1570364259319808/STEM/009a80834c70447489b92ffa387dee72.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570364254003200/1570364259319808/STEM/e8f6bbe3f7ac4b4d8cf95926d2586d36.png?resizew=100)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570364254003200/1570364259319808/STEM/e3e1d262c3ae456fbbc384528328a4d0.png?resizew=10)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570364254003200/1570364259319808/STEM/d48fc7ba895b416dba3c97cac6b6c713.png?resizew=8)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570364254003200/1570364259319808/STEM/92fe762ee5cc4f26810ae7226a806479.png?resizew=9)
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