名校
解题方法
1 . 若“
,使得
成立”是假命题,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f04b98907f4abe1dfad4967f4e6215b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94bae806e3c4539bd320feeea8084e3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-30更新
|
841次组卷
|
19卷引用:江西省都昌县第二中学2020-2021学年高二下学期期中考试数学(文)试题
江西省都昌县第二中学2020-2021学年高二下学期期中考试数学(文)试题2017届重庆市第一中学高三上期中数学(理)试卷2017届重庆市第一中学高三上学期期中数学(理)试卷2017届重庆市一中高三上学期期中数学(理)试卷江西省南昌市新建县第一中学2020届高三第二次适应性考试数学(文)试题四川省成都市武侯区第十二中学2020-2021学年高二上学期期中数学理科试题2017届四川双流中学高三理必得分训练10数学试卷河北省定州中学2017届高三(高补班)下学期第二次月考(4月)数学试题2018届高三数学训练题(3):逻辑联结词、量词 四川省三台中学实验学校2018-2019学年高二3月月考数学(理)试题(已下线)考点61 命题与逻辑用语(讲解)-2021年高考数学复习一轮复习笔记辽宁省沈阳东北育才学校科高部2019-2020学年高一(上)第一次月考数学试题山西省静乐县第一中学2020-2021学年高二上学期第二次月考数学(文)试题江苏省常州市新北区西夏墅中学2022届高三上学期开学数学试题2016-2017学年重庆市万州第二高级中学高二上学期期末考试理数试卷陕西省西安工业大学附属中学2022届高三下学期第七次模拟考试理科数学试题陕西省西安工业大学附属中学2022届高三下学期第七次适应性训练理科数学试题河北省秦皇岛市青龙满族自治县实验中学2022-2023学年高一上学期12月月考数学试题宁夏石嘴山市第三中学2017届高三上学期期末数学(理)试题
2 . 下列命题中,真命题的是
A.![]() ![]() |
B.命题![]() |
C.![]() |
D.![]() ![]() |
您最近一年使用:0次
3 . 现有下列命题:
①命题“
”的否定是“
”;
②若
,
,则
=
;
③函数
是偶函数的充要条件是
;
④若非零向量
满足
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6e5afe8d3051d79a3b8a560c79393d.png)
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(
),则
=1.
其中正确命题的序号有________ .(把所有真命题的序号都填上)
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7371cdee2dc27a787bf3edbc030ac98b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66d3d3cb916c57355924f0f00d0950b.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c731a7dbd387f81ae91a5a3fb46826dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8401ea399c28e292101208cb85b455a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c6d0847cbfb5690d6671d0faa574d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973bd09ae9775d390177e5bc07d091c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f2595c1b63398434d41069228e5f75.png)
④若非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db6e5afe8d3051d79a3b8a560c79393d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd9736828195f010db4e1f0a9dea7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
其中正确命题的序号有
您最近一年使用:0次
4 . 已知函数
,给下列三个命题:
若
,则
的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
不等式
的解集为集合
的真子集
当
时,若
恒成立,则
那么,这三个命题中所有的真命题是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2db360fa225d414fb614930b05c460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a617a9b648bfb804eb7ac1cf357f8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be07495dbc744e1ecabac66f748218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751fb799e713694a0afe83712ac82f34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f731aa23c326a79f5a97c0b805166272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8e1047cde4191c454d119c95e02676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f014f17c0af5a1b3506bf05fc428ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae3c3c8f3d94894cbd783960ca9c8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102bb2cdc5ffec825d5b4fc089370d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b0f39a3ea986f67cf864d6e0906610.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
5 .
三个学生参加了一次考试,
的得分均为
分,
的得分均为
分,已知命题
若及格分低于
分,则
都没有及格,在下列四个命题中,为
的逆否命题的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa86faa9bfef703aead8c2606684dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f64730802070a68d4f854b332a24814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa86faa9bfef703aead8c2606684dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.若及格分不低于![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
6 . 已知函数
,
,给出下列3个命题:
:若
,则
的最大值为16.
:不等式
的解集为集合
的真子集.
:当
时,若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
,
恒成立,则
.那么,这3个命题中所有的真命题是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d11d85741b2a78c4c8099e93182cbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04feb4c8471abaf404dee60276f37578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be07495dbc744e1ecabac66f748218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b669deac956c131bb17a1a68027409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6114c9e15216f4646012c22346583c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f014f17c0af5a1b3506bf05fc428ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eecdd7e6a66d50fc9816e73ab5a8f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2b4b73cd3b267de3aa9ed187601d2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4503967e383ee3557537cd49bc4ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b0f39a3ea986f67cf864d6e0906610.png)
A.![]() ![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次
7 .
,
,
三个学生参加了一次考试,
,
的得分均为70分,
的得分为
分.已知命题
:若及格分低于70分,则
,
,
都没有及格.在下列四个命题中,为
的逆否命题的是
![](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/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/8f64730802070a68d4f854b332a24814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.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/b1010846eeec6c9da29640f5aa3f8738.png)
A.若及格分不低于70分,则![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
名校
8 . 命题“若
,则
”的否命题为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973f19666fc80eabe324b7b62da89c63.png)
您最近一年使用:0次
2016-12-04更新
|
935次组卷
|
13卷引用:2016-2017学年江西省赣州市十四县(市)高二下学期期中联考数学(文)试卷
2016-2017学年江西省赣州市十四县(市)高二下学期期中联考数学(文)试卷【全国百强校】江苏省如东中学2019届高三年级第二次学情测试数学试题江苏省扬州中学2017-2018学年高二下学期期中数学(文)试题2017届湖北省百所重点校高三联合考试数学(理)试卷2017届湖北省百所重点校高三联合考试数学(文)试卷2017届湖北省重点高中协作校高三联考一数学(理)试卷2017届湖北省重点高中协作校高三联考一数学(文)试卷2017届湖北襄阳一中高三10月月考数学(文)试卷2016-2017学年河北正定中学高二理上月考二数学试卷2016-2017学年河北正定中学高二文上月考二数学试卷2017届广东汕头市高三理上学期期末数学试卷江苏省如东中学2019届高三年级第二次学情测试数学(已下线)专题2 常用逻辑用语(讲)-《2020年高考一轮复习讲练测》(江苏版)
名校
9 . 下列命题正确的是( )
A.命题:若![]() ![]() ![]() ![]() |
B.命题:![]() ![]() ![]() ![]() |
C.命题:存在四边相等的四边形不是正方形,该命题是假命题. |
D.命题:![]() ![]() |
您最近一年使用:0次
2016-12-04更新
|
240次组卷
|
3卷引用:2015-2016学年江西省赣州市十三县高二下学期期中文科数学试卷
10 . 下列命题正确的序号是________________ .
①命题“若
,则
”的否命题是真命题;
②若命题
,则;
;
③若
是
的充分不必要条件,则
是
的必要不充分条件;
④方程
有唯一解的充要条件是
.
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54969adfe007f7dacf556c4c863670b9.png)
②若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0708c81b25d9586edb9b50254ab6fe11.png)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572536537178112/1572536543223808/STEM/4774a5b17c434c8a9dfdf07df128b7d4.png?resizew=96)
③若
![](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/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
④方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb603ddbcd1297dfc9e08d33c360da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04b3794edcae853d076ac1df612eccf.png)
您最近一年使用:0次
2016-12-04更新
|
417次组卷
|
2卷引用:2015-2016学年江西省南城一中高二上学期期中考试文科数学试卷