1 . 给出下列四个命题:
①函数
的图像的一条对称轴是直线
;
②若命题
:“存在
”,则命题
的否定为:“对任意
”;
③若
,则
;
④“
”是“直线
与直线
互相垂直”的充要条件.
其中正确命题的序号为_________ .
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed7c53d765ce9c82f7b2a78d9275be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f56a20bc5fce6b02217627b42249854.png)
②若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75bb98733d31cdee8d0547af2801c8b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a57da9f5f70436610fadbf66d4b274.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd940a1fab0e50b423c879af9934e176.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289ce704ab8d876aa9756cf3ae972a2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af716c494fc62f7d7d60ad4aaf6b7e65.png)
其中正确命题的序号为
您最近一年使用:0次
20-21高一·全国·课后作业
2 . 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
3 . 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)
4 . 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)
名校
5 . 下列结论:
“直线l与平面
平行”是“直线l在平面
外”的充分不必要条件;
若p:
,
,则
:
,
;
命题“设a,
,若
,则
或
”为真命题;
“
”是“函数
在
上单调递增”的充要条件.
其中所有正确结论的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c512c047783c07da1d4f4455a4033ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876959b9f90f2379cf3d0927a8e31005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bded4e08a5c75fd82f1868c9f4c5b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3719d2ca3c5877bafc18f58c1fdf4b3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4690a619a829c621fb7cd1e98df13f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdf492b48e5da4602f2bde199deae4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bc9e7fe40882f2f79bcf8d87a7f031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67773252101fb3704fdac88b5f3f1bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bea9391c115618bb84a7aa3da8a242d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60dbdf0c087ab6be44595a5ca285acbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd594e99f82b7736c44e18b2721e607f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10baec9d907f3ccb3f64ad3de53a589d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74269cfb503e736149e1ac3165fcbafa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89e1ee3b8e2751f354aa5ab7135c75b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b3de9d6894829d7de515544cd6cd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8fe868d4152f599a9ae5a0dae150cb0.png)
其中所有正确结论的序号为
您最近一年使用:0次
2019-03-18更新
|
638次组卷
|
3卷引用:【市级联考】江苏省海门市2018-2019学年高二上学期期末联考数学(理)试题
2019高二上·全国·专题练习
6 . 下列说法不正确的是______________ (填序号).
①“若
,则
或
”的否命题为“若
,则
或
”;
②“
”是“
”的充要条件;
③“函数
在
上无零点”的充分不必要条件是“
”.
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b490251771387215bb9a184ded06fed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79bec7871c65b1c7fad449272b3a85df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0469b312798e19c24fe494d03fb0a9.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452e09db0f4a9b702d1f3f593d5a00d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0754b15fcb01ce15de5373b9ae0280.png)
③“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afffd5181532a4caf5bf64434b350a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9509a250d65dc9cc856401544216223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd8ba8bfcbf4c2e2c47e83403bd8902.png)
您最近一年使用:0次
2013·辽宁沈阳·一模
7 . 下面四个命题:
①把函数
的图象向右平移
个单位,得到
的图象;
②函数
的图象在x=1处的切线平行于直线y=x,则
是f(x)的单调递增区间;
③正方体的内切球与其外接球的表面积之比为1∶3;
④“a=2”是“直线ax+2y=0平行于直线x+y=1”的充分不必要条件.
其中所有正确命题的序号为_______ .
①把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a717eff37b12719ce3a2d1133a567059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c191fdfd08fb94ba6ed45c71f0fbeb.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b7ac6aa2ea754de988af76b40c7c3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418e13befb3ed159facdbd5aaa9bc49c.png)
③正方体的内切球与其外接球的表面积之比为1∶3;
④“a=2”是“直线ax+2y=0平行于直线x+y=1”的充分不必要条件.
其中所有正确命题的序号为
您最近一年使用:0次
11-12高二·辽宁铁岭·阶段练习
8 . 下列说法错误的是_________ (填写序号)
①命题“若
,则
”的逆否命题是“若
,则
”;
②“
”是“
”的充分不必要条件;
③若“
”为假命题,则
均为假命题;
④命题
:“
,使得
”,则
:“
,均有
”.
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.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/9a8a2a94168af9b16ce89271a5d8dc6b.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e38581b43f437454b86dae0daed9a2f.png)
③若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a550c916c64f621010e604a30ef67566.png)
④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/d23f44f1fd8bb878e9542cd81e46ba3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
您最近一年使用:0次
9 . 判断正误(正确的写正确,错误的写错误)
(1)“
”是“
”的充分条件.( )
(2)若p是q的必要条件,则q是p的充分条件.( )
(3)“两角不相等”是“两角不是对顶角”的必要条件.( )
(4)若a∈R,则“
”是“
”的充分条件.( )
(1)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b601d0f382f898200928e025bdf1e622.png)
(2)若p是q的必要条件,则q是p的充分条件.
(3)“两角不相等”是“两角不是对顶角”的必要条件.
(4)若a∈R,则“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a9ee06bad944581c43313af719cc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
您最近一年使用:0次
2023-08-27更新
|
197次组卷
|
2卷引用:人教A版(2019) 必修第一册 数学奇书 第一章 集合与常用逻辑用语 1.4 充分条件与必要条件 1.4.1 充分条件与必要条件
10 . 下列三个说法:①若命题
,
,则
,
;
②“
”是“
为偶函数”的充要条件;
③命题“若
,则
”是真命题.
其中说法正确的是________ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fac11dd95cb4b78adb817fad02dedb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264dab145ceba44696a6ee63b1e1549d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cd44731d509352f907c9773a42cab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4edb1714c9e1e5739efd858710c53bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55ba8847256e2a18e6cc44bd847df00.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15dc6143e7722e287e59f7c72a0eeb1.png)
其中说法正确的是
您最近一年使用:0次