1 . 给出如下三种说法:①四个实数a,b,c,d依次成等比数列的必要而不充分条件是ad=bc.②命题“若x≥3且y≥2,则x-y≥1”为假命题.③若p∧q为假命题,则p,q均为假命题.其中正确说法的序号为________ .
您最近一年使用:0次
名校
2 . 下列结论:
(1)若
,则“
”成立的一个必要不充分条件是“
,且
”;
(2)存在
,且存在
使得
;
(3)若函数
的导函数是奇函数,则实数
;
(4)平面上的动点
到定点
的距离比
到
轴的距离大
的点
的轨迹方程为
;
(5)已知平面
满足
,则
;
(6)若
,则事件
与
是对立事件.
其中正确结论的序号为__________ .(填写所有正确的结论序号)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec124eb33e5ab4601b4b70f70913b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
(2)存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ef778b8c90778644b6f34d2f851b0.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfe5f8a174b9b70fe067e171da7ea2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
(4)平面上的动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
(5)已知平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3e3f7a929526d602d0a4010ba479a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cac3ca03e7640dceb04fbf33b8268b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
(6)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94cb714391a7e13d8e53bebd4042fb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
其中正确结论的序号为
您最近一年使用:0次
名校
3 . 下列共用四个命题.
(1)命题“
,
”的否定是“
,
”;
(2)在回归分析中,相关指数
为
的模型比
为
的模型拟合效果好;
(3)
,
,
,则
是
的充分不必要条件;
(4)已知幂函数
为偶函数,则
.
其中正确的序号为_________ .(写出所有正确命题的序号)
(1)命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03edd85c55c93a3e34d3477d7e04f731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aec0693231f71fc10f820c41823dd37.png)
(2)在回归分析中,相关指数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c85067c53e936ef32da818efe04bdbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be68b3aa1b5022969487c0bb8aad2c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c85067c53e936ef32da818efe04bdbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085ce2eeb0eb35af515d1ecd8ebaa610.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd15a98f5f7c568023a3db60c2e1de2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0029379a0e2f8595cfb343a5c03f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(4)已知幂函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb7ed9690c65a9fbfe0441af5f0b26e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba24ca9648a13438daa6da7a10073163.png)
其中正确的序号为
您最近一年使用:0次
2017-05-26更新
|
851次组卷
|
4卷引用:湖南省长沙市长郡中学2017届高三5月模拟考试数学(理)试题
解题方法
4 . 在下列命题中
①函数
在定义域内为单调递减函数;
②函数
的最小值为
;
③已知定义在
上周期为4的函数
满足
,则
一定为偶函数;
④已知函数
,则
是
有极值的必要不充分条件;
⑤已知函数
,若
,则
.
其中正确命题的序号为______________ (写出所有正确命题的序号).
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ede389b43c78417912542746d91d00.png)
②函数
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957383168/STEM/1405346a0a20465795c2deddac96cdaa.png?resizew=132)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957383168/STEM/414997acf4274313b1f096344c63feff.png?resizew=33)
③已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c01ab30854f54c2514d1a05f779b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
④已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75044e0301ef9def5c1a1c8e6f2cba77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
⑤已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52142482df6bbd431d300f011e3ccb12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ecda7bfb0a2043306bf7707a136ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356704dd58441206abb070f2b8fc0cc8.png)
其中正确命题的序号为
您最近一年使用:0次
名校
5 . 给出下列三种说法:
①命题p:∃x0∈R,tan x0=1,命题q:∀x∈R,x2-x+1>0,则命题“p∧(
)”是假命题.
②已知直线l1:ax+3y-1=0,l2:x+by+1=0,则l1⊥l2的充要条件是
=-3.
③命题“若x2-3x+2=0,则x=1”的逆否命题为“若x≠1,则x2-3x+2≠0”.
其中所有正确说法的序号为________________ .
①命题p:∃x0∈R,tan x0=1,命题q:∀x∈R,x2-x+1>0,则命题“p∧(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
②已知直线l1:ax+3y-1=0,l2:x+by+1=0,则l1⊥l2的充要条件是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
③命题“若x2-3x+2=0,则x=1”的逆否命题为“若x≠1,则x2-3x+2≠0”.
其中所有正确说法的序号为
您最近一年使用:0次
2016-12-05更新
|
991次组卷
|
6卷引用:2016-2017学年河北馆陶县一中高二上期中数学试卷
2016-2017学年河北馆陶县一中高二上期中数学试卷黑龙江省海林市朝鲜族中学高三数学人教版选修1-1同步练习:第一章 常用逻辑用语单元测评江西省会昌中学2018-2019学年高二上学期第一次月考数学(理)试卷辽宁省沈阳市郊联体2018-2019 学年高二上学期数学(文科)期末试题(已下线)专题1.3 简单的逻辑联结词、全称量词与存在量词(精练)-2021年高考数学(文)一轮复习学与练广西壮族自治区钦州市第四中学2023届高三上学期9月考试数学(文)试题
名校
解题方法
6 . 有下列命题:
①不等式
的解集为
;
②若
,函数
的最小值是2;
③对于
,
恒成立,则实数
的取值范围是
;
④已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7c299ac496c0fb85c77eacab348e22.png)
,若
是
的充分不必要条件,则实数
的取值范围是
.
其中真命题的序号为________________ .(把所有正确答案的序号填写在横线上,多选、错选不给分)
①不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5d21732d8a22de752d615b46867f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796daaf8d1d5ebeab2d0d989dffe3716.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647e17f9be50dcaba45fa6b15d5d982a.png)
③对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b78b09b0bae2d4e347a8445393ac19f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8c8fd3bdee0551dd6048a131f9eeb7.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b964e01f15a297b8cc3cb564dea1cf01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7c299ac496c0fb85c77eacab348e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9cd3690e7aa3debb1ed054a9f622da.png)
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d54209e68b27ab4c59f51aa1e6f3d6fd.png)
其中真命题的序号为
您最近一年使用:0次
名校
7 . 以下命题错误的序号为( )
①
与
是两条不同的直线,则“
”是“
”的充分不必要条件;
②若“
”是真命题,则“
”一定是假命题;
③荀子曰:不积跬步,无以至千里,不积小流,无以成江海.这说明“积跬步”是“至千里”的充分条件;
④“
”是“
为奇函数”的充要条件.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ffcf966fb0d99555aa3862f933ba14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37c9888b01053e656d567cc2c1dc759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e03566282ef39ad17821036f228174.png)
②若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e48ebdd742cb5d310c21a384d599bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6777065ed14d76944be5cb45d9e2c76.png)
③荀子曰:不积跬步,无以至千里,不积小流,无以成江海.这说明“积跬步”是“至千里”的充分条件;
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104375baf5cef5eb92cfc7cf13b80193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.①③④ | B.①② | C.③④ | D.①④ |
您最近一年使用:0次
20-21高二·江苏·单元测试
解题方法
8 . 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
9 . 以下几种说法
①命题“
,函数
只有一个零点”为真命题
②命题“已知
,
,若
,则
或
”是真命题
③“
在
,
恒成立”等价于“对于
,
,有
”
④
的内角
,
,
的对边分别为
,
,
,则“
”是“
”的充要条件.
其中说法正确的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2c9043ff925c1fb693afd1516dbcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a12e04dcaf2cde31b57e86a3b41f471.png)
②命题“已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34982de5d3f287cd570ea30eb46d185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be861d83cddb5fc8aa22f7f0f9415d6.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89286660f11247d3d5f47507081ddd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e96e9a314387fa1c76e86179ee0121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45340678c2ec1bc8cd68c0a3a2ab8902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e96e9a314387fa1c76e86179ee0121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45340678c2ec1bc8cd68c0a3a2ab8902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d429989ce49589ba3d7b76a8809b5234.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b6662c6f84e1c97c9d05d9ae62c1eb.png)
其中说法正确的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.①③ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
名校
10 . 下列说法中:
①“若
,则
”的否命题是“若
,则
”;
②“
”是“
”的必要非充分条件;
③“
”是“
或
”的充分非必要条件;
④“
”是“
且
”的充要条件.
其中正确的序号为__________ .
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bad6987e8abfbf07d6a2650483d2a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bad6987e8abfbf07d6a2650483d2a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfcffd48bd96e513072d998b69b6629.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3056bd950bb55035358d45d1b7d354c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c925c4283740ce6cc412c1c5f57b0a.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80c89052d44692bfd1e37805035fb5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a871ef7bf13de3e15489d65b57a3cc.png)
其中正确的序号为
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