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1 . 下列说法正确的是_________ (请把你认为正确说法的序号都填上).
(1)函数
的最小正周期为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(2)若命题
:“
,使得
”,则
:“
,均有
”
(3)
中,
是
的充要条件;
(4)已知点N在
所在平面内,且
,则点N是
的重心;
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8639eae0325866c58acd33302151d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264dab145ceba44696a6ee63b1e1549d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
(4)已知点N在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202f58538466612afcf186e5c65d9a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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名校
2 . 以下四个命题:
①设
,则
是
的充要条件;
②已知命题
、
、
满足“
或
”真,“
或
”也真,则“
或
”假;
③若
,则使得
恒成立的
的取值范围为{
或
};
④将边长为
的正方形
沿对角线
折起,使得
,则三棱锥
的体积为
.
其中真命题的序号为________ .
①设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb417802d84e9711ce19af0c86be5fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ddcbcf836754992811b7a329ff27e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6fb389042e95416e4f6c1c88f943050.png)
②已知命题
![](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/11bc05f41215f9894e11d1df0465751a.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/30fd5acd3cea0866f64bc80ab4c14e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d768c170487a3232ca3bed8e0c48d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5d7e5bffcc7e6929339d286a7fdd29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18bd4b5562b5270f84b88ddea616b289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748418a963bdd8e32da4bab4e4abb7ba.png)
④将边长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2a39beea5adf5d07aea0424ca7a64f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664a853767dfe4df5cef491e93a16782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541d331f5a85132b83002863a1fad40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1595b660094288f0a87b0a016e69e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2bdc0f4d813d45b4ee5a81f748fa17.png)
其中真命题的序号为
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2卷引用:【市级联考】内蒙古呼和浩特市2019年高三第二次质量普查调研考试理科数学试题
真题
名校
3 . 以
表示值域为R的函数组成的集合,
表示具有如下性质的函数
组成的集合:对于函数
,存在一个正数
,使得函数
的值域包含于区间
.例如,当
,
时,
,
.现有如下命题:
①设函数
的定义域为
,则“
”的充要条件是“
,
,
”;
②函数
的充要条件是
有最大值和最小值;
③若函数
,
的定义域相同,且
,
,则
;
④若函数
(
,
)有最大值,则
.
其中的真命题有______ .(写出所有真命题的序号)
![](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/8b2775ffdf695af2d263f0ea93ac5904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2775ffdf695af2d263f0ea93ac5904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2775ffdf695af2d263f0ea93ac5904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d026b8ce5fb3f1d147f139fdd5af39c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1cdfb00a445d7a73fce37d84e459bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3909cd1628b8b860f2cb4ba8cca2dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89256c12f998fee91b796aa00aeac440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef8638db5cf7b727d465c5f3cfcac3b.png)
①设函数
![](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/7d5f5f81ea1a02b88ff8491fcf4937db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e446c2c7236efca702c2869e5b5fdd52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ca1d83d558f02394e85bd86042d968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da27faad3fc7a8b669314585f6d105e.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b29b07686669fd91b85dac9ac7043af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5f5f81ea1a02b88ff8491fcf4937db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5669bd4748f02f78b1484d9000664271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498c8073dee67659c89dd5298331d04e.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f386336dd9d314e3ca8b41842c024c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a7e4dcebd24c843379926de9c0b780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b29b07686669fd91b85dac9ac7043af.png)
其中的真命题有
您最近一年使用:0次
2019-01-30更新
|
3427次组卷
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17卷引用:2014年全国普通高等学校招生统一考试理科数学(四川卷)
2014年全国普通高等学校招生统一考试理科数学(四川卷)2014年全国普通高等学校招生统一考试文科数学(四川卷)(已下线)2015届湖北省部分重点中学高三上学期起点考试理科数学试卷(已下线)2013-2014学年福建省漳州一中高二下学期期末考理科数学试卷(已下线)2015届四川省成都市新都一中高三10月考理科数学试卷2015届山东省日照市高三12月校际联合检测理科数学试卷北京市第四中学2017-2018学年高三上学期期中考试数学(理)(已下线)北京市第四中学2018届高三年级上学期期中考试数学文科试卷(已下线)2019高考备考一轮复习精品资料【理】专题五 函数的单调性与最值 教学案(已下线)2019高考热点题型和提分秘籍 【文数】专题5 函数的单调性与最值 (教学案)(已下线)2019高考热点题型和提分秘籍 【理数】专题5 函数的单调性与最值 (教学案)(已下线)2019高考备考二轮复习精品资料【文数】-专题2 函数的图像与性质(教学案)【区级联考】山西省运城市盐湖区2017-2018学年高二上学期期末考试数学文试题(已下线)专题07 函数的综合应用-十年(2011-2020)高考真题数学分项(已下线)常用逻辑用语(已下线)专题03 函数填空题(理科)-1(已下线)专题3 函数填空题(文科)-2
名校
4 . 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
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|
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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
2011·四川绵阳·一模
5 . 下列命题中正确的是________
①在直角三角形中,三条边的长成等差数列的充要条件是它们的比为3:4:5;
②设Sn是等比数列{an}的前n项和,则公比q
是数列S3,S9,S6成等差教列的充分不必要条件;
③若数列{an}满足a1=2,an+1=ancos
,则a2010=0;
④在数列{an}中,若a1,a2都是正整数,且
,n=3,4,5…,则称{an}为“绝对差数列”,则此数列中必含有为0的项.
①在直角三角形中,三条边的长成等差数列的充要条件是它们的比为3:4:5;
②设Sn是等比数列{an}的前n项和,则公比q
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9ff2e8821be9608f4e039b882405b2.png)
③若数列{an}满足a1=2,an+1=ancos
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ad4afaa23a4e83e90b8e8795d2b22b.png)
④在数列{an}中,若a1,a2都是正整数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2e73c8f5511cab6dc67399f50afb29.png)
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