名校
1 . 设
,命题
“方程
有实数根”, 命题
“对任意实数
,
恒成立”.
(1)若
为真命题,求
的最大值;
(2)若
为真命题,且
为假命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a4fcad318aa51ab12e0070ae5852b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30093371957cc3d85050dffb500bd72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b28f3e01afc01e580901af85074500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba61bb1a5f689b6f247d2c01d35e1c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5b468cb7f5266384e8b1a9446ed5a7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d426f0f57b67c00ab87e81c9d1d5ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094543346d88c4ed45c1b1fb91f5265b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2018-12-10更新
|
719次组卷
|
2卷引用:【校级联考】安徽皖东名校联盟2019届高三上学期第二次联考数学文科试题
名校
2 . 已知命题
函数
的图象与x轴至多有一个交点,命题
.
(1)若
q为真命题,求实数m的取值范围;
(2)若p
q为假命题,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c5ebe7e498bc8eea78c890b9b83f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d0fea0d2c04b583ef9b0e07ca060cf3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a45a62af2453837041c28e79295415.png)
(2)若p
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83683a7b6816a226749117719685a17f.png)
您最近一年使用:0次
2018-11-10更新
|
588次组卷
|
5卷引用:【市级联考】江苏省盐城市2019届高三第一学期期中考试数学试题
【市级联考】江苏省盐城市2019届高三第一学期期中考试数学试题(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)(已下线)专题2 常用逻辑用语(练)-《2020年高考一轮复习讲练测》(江苏版)【全国百强校】江苏省扬州中学2018-2019学年高二第二学期五月检测数学(文)试题安徽省滁州市定远县育才学校2018-2019学年高二(普通班)下学期期末考试数学(文)试题
3 . 写出下列命题的逆命题、否命题和逆否命题:
(1)若a>b,则ac2>bc2;
(2)若在二次函数y=ax2+bx+c中b2-4ac<0,则该二次函数的图像与x轴有公共点.
(1)若a>b,则ac2>bc2;
(2)若在二次函数y=ax2+bx+c中b2-4ac<0,则该二次函数的图像与x轴有公共点.
您最近一年使用:0次
2018-11-08更新
|
298次组卷
|
3卷引用:山东省乐陵市第一中学2019届高三一轮复习理科数学:常用逻辑用语测试
山东省乐陵市第一中学2019届高三一轮复习理科数学:常用逻辑用语测试(已下线)章末质量检测1 常用逻辑用语-2018年数学同步优化指导(北师大版选修2-1)安徽省北大附属宿州实验学校2018-2019学年高二上学期期末数学(理)试题
2019高三·全国·专题练习
4 . 已知命题
:
,
.
(Ⅰ)若
为真命题,求实数
的取值范围;
(Ⅱ)若有命题
:
,
,当
为真命题且
为假命题时,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/599b4ae88a1d40d8bda8d8601f2e880e.png?resizew=8)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/587eddd8ad9543fdbf1660536f0212ca.png?resizew=43)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/2333aff0421e4c789a0b7a12684bc815.png?resizew=114)
(Ⅰ)若
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/599b4ae88a1d40d8bda8d8601f2e880e.png?resizew=8)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/1396dbe675f1412d95ca20033be61724.png?resizew=12)
(Ⅱ)若有命题
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/c511b26cb388477790ebb795f114b6c0.png?resizew=8)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/47a97ce428f140b89625cbf77d08d11f.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/e2179caf3b0b4b56b45d7a8341cda011.png?resizew=69)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/844062ce399748a684117a18d431a220.png?resizew=30)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/2bb10c01ee7742588dcbf79a697978d8.png?resizew=30)
![](https://img.xkw.com/dksih/QBM/2018/10/29/2064086202466304/2064129104642048/STEM/1396dbe675f1412d95ca20033be61724.png?resizew=12)
您最近一年使用:0次
名校
5 . 已知命题p: 曲线y=
1与x轴没有交点;命题q:函数f(x)=
是减函数.若p或q为真命题,p且q为假命题,则实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebde7e4a3b45ade4895a30bfd12fbf0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae464ffbc7993b240f05f4a5f735923f.png)
您最近一年使用:0次
名校
6 . 已知命题
曲线
1与
轴没有交点;命题
函数
是减函数.若
或
为真命题,
且
为假命题,则实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558b399478ca2767d994e186fcbeae31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95db33d1fd76b32d2e35d1839181aa71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e434d52b7741e42c21c2785eb07ffcaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89bdf1717c68cfc8a306ee79757e7e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e434d52b7741e42c21c2785eb07ffcaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89bdf1717c68cfc8a306ee79757e7e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
您最近一年使用:0次
7 . 写出命题“若x2+x≤0,则|2x+1|<1”的逆命题、否命题、逆否命题,并分别判断它们的真假.
您最近一年使用:0次
8 . 设
:实数
满足
,
:实数
满足
.
(Ⅰ)当
时,若
为真,求实数
的取值范围;
(Ⅱ)当
时,若
是
的必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e214ee67f5ab6252520118d1c718b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1495e524e9341750e16d3a7033829da0.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-07-17更新
|
1986次组卷
|
8卷引用:安徽省江南片2019届高三上学期开学摸底联考理科数学试题
安徽省江南片2019届高三上学期开学摸底联考理科数学试题(已下线)专题1.2 命题及其关系、逻辑联结词、充分条件与必要条件-《2020年高考一轮复习讲练测》(浙江版)(已下线)专题1.2 全称量词与存在量词、充要条件(讲)-2021年新高考数学一轮复习讲练测(已下线)专题1.2 全称量词与存在量词、充要条件(讲)- 2022年高考数学一轮复习讲练测(新教材新高考)【全国校级联考】福建省龙岩市一级达标校2017-2018学年高二下期期末考试文科数学试题【市级联考】河北省廊坊市2018-2019学年高二第二学期期中联合调研考试文科数学试题河北省廊坊市2018-2019学年高二第二学期期中联合调研考试文科数学试题四川省凉山州2019-2020学年高二上学期期末考试数学(理科)试题
名校
9 . 设命题
方程
有两个不相等的负根,命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
恒成立.
(1)若命题
均为真命题,求
的取值范围;
(2)若命题
为假,命题
为真,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ea5c1de4b41af90aa3c1d51144fa57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed73b37e63575d3ea259c037aa13d77d.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2018-03-05更新
|
1258次组卷
|
6卷引用:河南省周口市中英文学校2019-2020学年高三上学期10月月考数学试题
名校
10 . 已知命题
:
,
;命题
:
,使
.若“
或
”为真,“
且
”为假,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420aa38873810dc48e8713856c2fcc91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1262cfba2b91eb7a46765ed83d3b1c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd3f365824183b724a56a4d48eaee84.png)
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次