1 . 给出如下三种说法:①四个实数a,b,c,d依次成等比数列的必要而不充分条件是ad=bc.②命题“若x≥3且y≥2,则x-y≥1”为假命题.③若p∧q为假命题,则p,q均为假命题.其中正确说法的序号为________ .
您最近一年使用:0次
2 . 给出下列命题:
①命题“同位角相等,两直线平行”的否命题为:“同位角不相等,两直线不平行”.
②“
”是“
”的必要不充分条件.
③“
或
是假命题”是“
为真命题”的充分不必要条件.
④对于命题
:
使得
,则
:
均有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491ef2ec844032e0c2ab9cc4a545dff3.png)
其中真命题的序号为________ (把所有正确命题的序号都填在横线上)
①命题“同位角相等,两直线平行”的否命题为:“同位角不相等,两直线不平行”.
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727bd2eb1d561e821c4d175f15cf705e.png)
③“
![](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)
④对于命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455f2c260624da19c2b044f1e80006b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6854e4631eb5f02d9f60732d80ad7117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21f00047ebe6f01a61e53c08192b8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491ef2ec844032e0c2ab9cc4a545dff3.png)
其中真命题的序号为
您最近一年使用:0次
解题方法
3 . 在下列命题中
①函数
在定义域内为单调递减函数;
②函数
的最小值为
;
③已知定义在
上周期为4的函数
满足
,则
一定为偶函数;
④已知函数
,则
是
有极值的必要不充分条件;
⑤已知函数
,若
,则
.
其中正确命题的序号为______________ (写出所有正确命题的序号).
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ede389b43c78417912542746d91d00.png)
②函数
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957383168/STEM/1405346a0a20465795c2deddac96cdaa.png?resizew=132)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957383168/STEM/414997acf4274313b1f096344c63feff.png?resizew=33)
③已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c01ab30854f54c2514d1a05f779b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
④已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75044e0301ef9def5c1a1c8e6f2cba77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
⑤已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52142482df6bbd431d300f011e3ccb12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ecda7bfb0a2043306bf7707a136ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356704dd58441206abb070f2b8fc0cc8.png)
其中正确命题的序号为
您最近一年使用:0次
名校
4 . 下列说法不正确的是________ .(只填序号)
①
是
的必要条件;
②
是
的充分不必要条件;
③
是
且
的充分条件;
④
是
的充分不必要条件.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d54e72f2a8f5bf4a12f3328503afb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e9029d132adff5937610349c883287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16688590aa75a979cc269d934f1bf899.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34715101c66fa12ce6baf0a9c53f1672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0973815df3264c67f94eccde1c279ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200849ce71f53c0321506e27de437b8d.png)
您最近一年使用:0次
2023-08-28更新
|
473次组卷
|
3卷引用:人教A版(2019) 必修第一册 数学奇书 学业评价(六) 充分条件与必要条件
名校
5 . 下列说法中:
①“若
,则
”的否命题是“若
,则
”;
②“
”是“
”的必要非充分条件;
③“
”是“
或
”的充分非必要条件;
④“
”是“
且
”的充要条件.
其中正确的序号为__________ .
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bad6987e8abfbf07d6a2650483d2a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bad6987e8abfbf07d6a2650483d2a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfcffd48bd96e513072d998b69b6629.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3056bd950bb55035358d45d1b7d354c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c925c4283740ce6cc412c1c5f57b0a.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80c89052d44692bfd1e37805035fb5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a871ef7bf13de3e15489d65b57a3cc.png)
其中正确的序号为
您最近一年使用:0次
10-11高二·福建福州·期末
6 . 以下四个命题:
①
是函数
的极值点;
② 当
无限趋近于
时,
无限趋近于
;
③
是
的必要不充分条件,则
是
的充分不必要条件;
④在
中,“
”是“
”的必要不充分条件.
其中真命题的序号为_____ (写出所有真命题的序号)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2899fba91f6c9441a4eb514f0be7e3a.png)
② 当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcd1c6b9feb56cf15b5f706e0a6735a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5040d31e784398842b04ed7dd0aacc10.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
④在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c253e2d257e9d313c50dc7308b3739ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d236e7315396d77ee666880edd1bef49.png)
其中真命题的序号为
您最近一年使用:0次
11-12高二上·辽宁锦州·期末
解题方法
7 . 给出下列命题:
①命题“所有的正方形都是矩形”的否定是“所有的正方形都不是矩形”;
②设
为简单命题,则“
”为假是“
”为假的必要而不充分条件;
③函数
的极小值为
,极大值为
;
④双曲线的渐近线方程是
,则该双曲线的离心率是
.
⑤等差数列
中首项为
,则数列
为等比数列;
其中真命题的序号为 (写出所有真命题的序号)
①命题“所有的正方形都是矩形”的否定是“所有的正方形都不是矩形”;
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fbac3b04744429a839e1cd0a9da704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54b6a060d6c51a328341df76013bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e1a1611f320c0f358df77aaae3f942.png)
④双曲线的渐近线方程是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0f4b0890e4659c9cf8bcbb5dcf9ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
⑤等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4844ada5b5eb39d704345bb4e6080d99.png)
其中真命题的序号为 (写出所有真命题的序号)
您最近一年使用:0次
名校
8 . 以下四个关于圆锥曲线命题:
①“曲线
为椭圆”的充分不必要条件是“
”;
②若双曲线的离心率
,且与椭圆
有相同的焦点,则该双曲线的渐近线方程为
;
③抛物线
的准线方程为
;
④长为6的线段
的端点
分别在
、
轴上移动,动点
满足
,则动点
的轨迹方程为
.
其中正确命题的序号为_________ .
①“曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296f6b73bcb1ea61bff5367a9a918613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c47599e2a10a7a6747a6d15e12b34b.png)
②若双曲线的离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0276541c12707b24d2f06ea3d976cf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aeab094fbdaf03e9a1549a4ad482d6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6bb019e2d7c6d17d15ec4d9043f5e6.png)
③抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8ccb340f9dafd01836b1460b967d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de9bb12543a10b43880a0dccbd2bfbd.png)
④长为6的线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851bc0dbf871e8a520f09c4b8fc06079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4e28d8a9c02bb06f9f67dc897e2451.png)
其中正确命题的序号为
您最近一年使用:0次
2020-04-27更新
|
388次组卷
|
3卷引用:湖北省襄阳市2018-2019学年高二下学期期末数学(理)试题
9 . 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)
10 . 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)