1 . 给出下列命题:
①命题“若方程
有两个实数根,则
”的逆否命题是真命题;
②“函数
的最小正周期为
”是“
”的必要不充分条件;
③函数
的零点个数为
;
④幂函数
的图像恒过定点
;
⑤“向量
与
的夹角是钝角”的充分必要条件是“
”;
⑥方程
有三个实根.
其中正确命题的序号为__________.
①命题“若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a3e1fc5ab686a2b780634ba01e7eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1306d84b2a09cc4fb78a4f2b4f36e5e7.png)
②“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de72aaf02b68c3a85f563f6fdf3f6049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711cf5d8ea04cfb77f5d64509cd19d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
④幂函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24cec312d254f9b984ea7b1b5977b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b6e2daf80f810e8b0f254fa6b5f4d8.png)
⑤“向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdab13be1e0b75550db1b6ad88c2b67.png)
⑥方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9196601de42d17ec364f09a53219ee.png)
其中正确命题的序号为__________.
您最近一年使用:0次
2 . 已知命题“若函数
在
上是增函数,则
”,下列结论正确的有______ .
①否命题是“若函数
在
上是减函数,则
”,是真命题
②逆命题是“若
,则函数
在
上是增函数”,是真命题
③逆否命题是“若
,则函数
在
上是减函数”,是真命题
④逆否命题是“若
,则函数
在
上不是增函数”,是真命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2811f486076edd7e1940ab4b273fc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347c62b44fae618a37c145b3b5d1f1db.png)
①否命题是“若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2811f486076edd7e1940ab4b273fc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
②逆命题是“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347c62b44fae618a37c145b3b5d1f1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2811f486076edd7e1940ab4b273fc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
③逆否命题是“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2811f486076edd7e1940ab4b273fc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
④逆否命题是“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2811f486076edd7e1940ab4b273fc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
您最近一年使用:0次
2016-12-04更新
|
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6卷引用:2019高考备考一轮复习精品资料 【文】专题二 命题及其关系 教学案
(已下线)2019高考备考一轮复习精品资料 【文】专题二 命题及其关系 教学案(已下线)2019高考备考一轮复习精品资料 【理】 专题二 命题及其关系、充分条件与必要条件 教学案(已下线)2019高考热点题型和提分秘籍 【理数】专题2 命题及其关系、充分条件与必要条件 (教学案)(已下线)2019高考热点题型和提分秘籍 【文数】专题2 命题及其关系、充分条件与必要条件 (教学案)2015-2016学年山西省怀仁一中高二下期中理科数学试卷吉林省长春市九台区第四中学2019-2020学年高二上学期期末考试数学(理科)试题
3 . 有下列命题:
①在函数
的图象中,相邻两个对称中心的距离为
;
②命题:“若
,则
”的否命题是“若
,则
”;
③“
且
”是“
”的必要不充分条件;
④已知命题
对任意的
,都有
,则
是:存在
,使得
;
⑤命题“若
,则
”是真命题;
⑥在
中,若
,则角
等于
或
.
其中所有真命题的序号是__________ .
①在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e920e45bf707293cd71cd87ba9f25ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.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/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43f0f4dccb727c6a655ff483f5f843d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec66b3436594131a07fee9e3fea6d9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc2eeaca8a8ce4bcce2bff011a11bf.png)
④已知命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05611fbe265ef9e3d4a8b1821bcbc1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070054c0b4182ab7399ed56925844e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3ecba19917cb95ee17b82f1b4877c4.png)
⑤命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a42640447d78b395d0ff9057efdd84.png)
⑥在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa183e22a39c5c8ca7054dd79e5cf5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f3a8b0608ec011ad95c522fd2ea4d.png)
其中所有真命题的序号是
您最近一年使用:0次
名校
4 . 给定下列四个命题:其中为真命题的是 .(填上正确命题的序号)
①“
”是“
”的充分不必要条件;
②若“
”为真,则“
”为真;
③已知
,则“
”是“
”的充分不必要条件;
④“若
,则
”的逆否命题为真命题.
①“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db7b603aebdee8e298d1fe49c848e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddb2170fbf89630f3f3ece1dab5de743.png)
②若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
③已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
④“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bcddc2ece6bcde9355e222e1cf9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
您最近一年使用:0次
2016-12-04更新
|
726次组卷
|
4卷引用:陕西省商洛市洛南中学2020-2021学年高三上学期第一次模拟数学(文)试题
5 . 下列四个命题:
①命题“若
,则
”的否命题是“若
,则
”;
②若命题
,则
;
③若命题“
”与命题“
或
”都是真命题,则命题
一定是真命题;
④命题“若
,则
”是真命题.
其中正确命题的序号是_________________ .(把所有正确的命题序号都填上)
①命题“若
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/6edeecf4f11c4c309125a5f12910bdf7.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/5eb977f66bfb430187867e3b9b0b4198.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/6edeecf4f11c4c309125a5f12910bdf7.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/ff7b192ffb4b499d870dea38307cc6bc.png?resizew=47)
②若命题
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/8a1d6b1b0de44f31ad47ac6440db9bdc.png?resizew=165)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/a52c874b268042b88f71bf66c0511699.png?resizew=177)
③若命题“
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/97ade9c08281410c862ad5629642382b.png?resizew=25)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/733bb2f0339849a587162cd842b85d28.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/5802392b41524134b5a670b44d57f5c6.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/5802392b41524134b5a670b44d57f5c6.png?resizew=13)
④命题“若
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/47ff890587f44ccc8b5a320c92129071.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/2015/11/17/1572294146777088/1572294152495104/STEM/646c8fa2fd8a4247b1733deb79c8ed6a.png?resizew=163)
其中正确命题的序号是
您最近一年使用:0次
2016-12-03更新
|
606次组卷
|
2卷引用:2016届山东省潍坊一中高三10月月考理科数学试卷
6 . 命题“若实数a满足a≤2,则a2<4”的否命题是______ (填“真”或“假”)命题.
您最近一年使用:0次
7 . 给出如下四个命题:①若“
或
”为真命题,则
、
均为真命题;
②命题“若
且
,则
”的否命题为“若
且
,则
”;
③在
中,“
”是“
”的充要条件.
④命题 “
”是真命题.其中正确的命题的个数是_________ .
![](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/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0935b0d5568370418871fa7a6c47162d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a583e1950f97c1c88fc322421fd1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1357a1cd93564d4c40b96c94b17382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c7a19e1029af85500bcff59d976b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d634ea3ee84dca7c5b59f77d77464ee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e906994b4ed24e674e82ecaac96cbe.png)
③在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff400f6ada0efc5843c12e354d7eee36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d236e7315396d77ee666880edd1bef49.png)
④命题 “
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663386c2d7ae27e8c2acb596e4f72196.png)
您最近一年使用:0次
2016-12-03更新
|
1015次组卷
|
2卷引用:2016届河北省定州中学高三第一次月考理科数学试卷
10-11高二下·北京东城·期末
8 . 有下列四个命题
①“若
,则
互为相反数”的逆命题;
②“全等三角形的面积相等”的否命题;
③“若
,则
有实根”的逆否命题;
④“不等边三角形的三个内角相等”的逆命题.
其中真命题为_______________ .
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
②“全等三角形的面积相等”的否命题;
③“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f8c9a7302470b0de565fa20a0f5a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d55dec8c5df4d73ded126f050748da1.png)
④“不等边三角形的三个内角相等”的逆命题.
其中真命题为
您最近一年使用:0次
9 . 给出以下四个命题:
①已知命题
;命题
.则命题
是真命题;
②命题“若
,则
有实根”的逆否命题;
③命题“面积相等的三角形全等”的否命题;
④命题“
,则
”的逆命题.
其中正确命题的序号为___________ .(把你认为正确的命题序号都填上)
①已知命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b4755ea7583e97f1d4758bf9aa7240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd51a797da1fc76a87b5aeba4d79240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347c62b44fae618a37c145b3b5d1f1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5707186257494f1fea86066f2778b5.png)
③命题“面积相等的三角形全等”的否命题;
④命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f7906f9faac3a41101e4c3cbd60414.png)
其中正确命题的序号为
您最近一年使用:0次
10 . 给出下列四个命题:
①若
,且
则
;
②设
,命题“若
”的否命题是真命题;
③函数
的一条对称轴是直线
;
④若定义在
上的函数
是奇函数,则对定义域内的任意
必有
.
其中,所有正确命题的序号是________ .
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2522f1f61064198ab593a1fe5fef02eb.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120ee3df911899b0402065c4564b9dab.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156c63a644431fc10d6abade54869dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040fe07515a2b0c25745c25c816d491e.png)
④若定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](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/b4f3c8ca7da7e31df6bb57a987d6437b.png)
其中,所有正确命题的序号是
您最近一年使用:0次
2016-12-03更新
|
1535次组卷
|
2卷引用:2015届山东省济宁市育才中学高三上学期期中考试文科数学试卷