1 . 给出以下三个命题:
①若
,则
;
②在
中,若
,则
;
③在一元二次方程
中,若
,则方程有实数根.
其中原命题、逆命题、否命题、逆否命题均为真命题的是________ .
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef019ee5c3eff526b479ba9482e8a16b.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19acddff4cb3831a8e8974e532c05242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
③在一元二次方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9deb79d044a379f31a8fc57736d7ead.png)
其中原命题、逆命题、否命题、逆否命题均为真命题的是
您最近一年使用:0次
2020-01-11更新
|
125次组卷
|
2卷引用:黑龙江省哈尔滨市宾县一中2019-2020学年高二上学期第三次月考数学(文)试卷
名校
2 . 给出以下命题,
①命题“若
,则
或
”为真命题;
②命题“若
,则
”的否命题为真命题;
③若平面
上不共线的三个点到平面
距离相等,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de666db0febae223cc4d1dc189d71ca6.png)
④若
,
是两个不重合的平面,直线
,命题
,命题
,则
是
的必要不充分条件;
⑤平面
过正方体
的三个顶点
,且
与底面
的交线为
,则
∥
;
其中,真命题的序号是______
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19da8db4bf645326f7d46da8db520375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc91d92eb161e54def20b039d2089201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdc78c604b10eba14ae694c84921076.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c581913b2d08b871608e939f29cb24b.png)
③若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de666db0febae223cc4d1dc189d71ca6.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1754786a3367aca3da18ee3316e5b968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c3076578d6b3a942e530cceea1a217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/774180038a4923bb2941bed37df6aec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
⑤平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ccc6b9e27a149ffb7b2196eda25bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af28704e7c27acfe42693a05eca255ca.png)
其中,真命题的序号是
您最近一年使用:0次
名校
3 . 给出下列结论:
①若
为真命题,则
、
均为真命题;
②命题“若
,则
”的逆否命题是“若
,则
”;
③若命题
,
,则
,
;
④“
”是“
”的充分不必要条件.其中正确的结论有____ .
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.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/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a8a2a94168af9b16ce89271a5d8dc6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
③若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bea9702708f8463975c94119fa50f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba775e0260ffbe30df0600b8dc5cf5fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84aa95f148161958d495918558233b46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8646eaa05bfde39d27813c301a076420.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d141f34f18f4802d04ef2e4e5e803aba.png)
您最近一年使用:0次
2019-10-14更新
|
648次组卷
|
4卷引用:黑龙江省齐齐哈尔市第八中学2019-2020学年高二9月月考数学(理)试题
黑龙江省齐齐哈尔市第八中学2019-2020学年高二9月月考数学(理)试题黑龙江省双鸭山市尖山区第一中学2019-2020学年高二上学期期中数学(理)试题江西省贵溪市实验中学2020-2021学年高二下学期期末考试数学(文)试题(已下线)2.3 全称量词命题与存在量词命题(课堂培优)-2021-2022学年高一数学课后培优练(苏教版2019必修第一册)
名校
4 . 给出下列命题:
①“
”是“
”的充分必要条件;
②命题“若
,则
”的否命题是“若
,则
”;
③设
,
,则“
且
”是“
”的必要不充分条件;
④设
,
,则“
”是“
”的必要不充分条件.
其中正确命题的序号是_________ .
①“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e39ed1fa73c58f8614ab27edb32699.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199e9b71bddd6f73725518ab2d567b32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f7906f9faac3a41101e4c3cbd60414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
③设
![](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/b27f27cbb8185c1974d715ff95f8801c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a583e1950f97c1c88fc322421fd1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29d8c59554191f56ef5bc00eb50297a.png)
④设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
其中正确命题的序号是
您最近一年使用:0次
2019-07-26更新
|
884次组卷
|
2卷引用:黑龙江省齐齐哈尔市2018-2019学年高二下学期期末数学(理)试题
名校
5 . 给出下列4个命题:
①若函数
在
上有零点,则一定有
;
②函数
既不是奇函数又不是偶函数;
③若函数
的值域为
,则实数
的取值范围是
;
④若函数
满足条件
,则
的最小值为
.
其中正确命题的序号是:_____ .(写出所有正确命题的序号)
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470dacd2f5ec4ef966655c99573bba65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db0e83c28748cd1be29b5d3a29d98f4.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ffb39adc00c657ff6ccf19f587b64d.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a3052f2d80bb0ee0dd8275b86b7388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17647eb6308391a37c19af071fd989a.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9514570ad6cab6fe9bea27a42f97add3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6afd1b3aeae1bd415dba90e50c001c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3a08e770d5b030c3219c3ee4a695f4.png)
其中正确命题的序号是:
您最近一年使用:0次
2019-05-19更新
|
1481次组卷
|
3卷引用:黑龙江省哈尔滨市第六中学2018-2019学年高二下学期期末数学试题
名校
6 . “若
,则
”为________ 命题.(填“真”、“假”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f6370f22a42d9ad805b5537bb33593.png)
您最近一年使用:0次
2019-02-12更新
|
389次组卷
|
3卷引用:黑龙江省绥化市青冈县第一中学2020-2021学年高二第一学期月考(腾飞班)数学(文)试题
黑龙江省绥化市青冈县第一中学2020-2021学年高二第一学期月考(腾飞班)数学(文)试题【全国百强校】江西省南昌市第十中学2018-2019学年高二上学期期末考试数学(文)试题(已下线)上海市华东师范大学第二附属中学2022-2023学年高一上学期9月月考数学试题
名校
7 . 以下给出五个命题,其中真命题的序号为______
①函数
在区间
上存在一个零点,则
的取值范围是
或
;
②“任意菱形的对角线一定相等”的否定是“菱形的对角线一定不相等”;
③
,
;
④若
,则
;
⑤“
”是“
成等比数列”的充分不必要条件.
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c95f079838b4c0d5fa76320bc4f39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002ad1638f25e355d70d5ab63e637f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e66b0aa8972c797c9f3ddccdd4fdd5.png)
②“任意菱形的对角线一定相等”的否定是“菱形的对角线一定不相等”;
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb6324528c9fe1e0ae58bf993e9c9d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ad117157c07abdef9baf890ccc90f8.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1b5f665d41a2d0e4980b35c1b6e578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c855dfd821bdda47ea3acdd3bac48e0.png)
⑤“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988b7e964e313579ab8869d67d5be007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
您最近一年使用:0次
8 . 下列五种说法:
命题“
,使得
”的否定是“
,都有
”;
设p、q是简单命题,若“
”为假命题,则“
”为真命题;
若p是q的充分不必要条件,则
是
的必要不充分条件;
把函数
的图象上所有的点向右平移
个单位即可得到函数
的图象;
已知扇形的周长是4cm,则扇形面积最大时,扇形的中心角的弧度数是2.
其中所有正确说法的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c512c047783c07da1d4f4455a4033ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38f70af61ec6dc4e4076a4546d44137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a77bb8bc9120da9b8ec5ea71dda451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704c21b1058b499455ac2060b9e33027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c8b78dd406f16ff09fcc124fe2bd87d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876959b9f90f2379cf3d0927a8e31005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d426f0f57b67c00ab87e81c9d1d5ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fbde5dcc4b3fcc5831ffe4c7e465ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67773252101fb3704fdac88b5f3f1bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fd5acd3cea0866f64bc80ab4c14e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9aacc4fa7d44974d18a3fb9e290b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74269cfb503e736149e1ac3165fcbafa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d84bc9cae767901f0d71d1ad4caa180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d73c429f872c525473790038abe8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408fbc5d43f92874d0838b4451fdf478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/406d4ad05a8f3a004d60fae7e6ebf1e0.png)
其中所有正确说法的序号是
您最近一年使用:0次
2019高三·江苏·专题练习
名校
9 . 下列命题中为真命题的是________ .(填序号)
①命题“若
,则
”的逆命题;
②命题“若
,则
”的否命题;
③命题“若
,则
”的否命题;
④“若
,则
”的逆否命题.
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21208364124b5c477b2ff8df1c2e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552d996f4748a1c0d22149f9ead89f02.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6749db809dd84c2cfe5c47bea121e356.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828765097c682c0b260c81e5bf6229a6.png)
④“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0973815df3264c67f94eccde1c279ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1dbe0d4a121e1b69c2ad3b14d25d1e5.png)
您最近一年使用:0次
10 . 已知
,
,若
是
的充分不必要条件,则实数m的取值范围是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd20b689abff23a3250eb431ef5fadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7f46a57f870e603428fedbb751f660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
您最近一年使用:0次