名校
1 . 下列四种说法:
①命题“
,
”的否定是“
,
”;
②若不等式
的解集为
,则不等式
的解集为
;
③对于
,
恒成立,则实数a的取值范围是
;
④已知p:
,q:
(
),若p是q的充分不必要条件,则实数a的取值范围是
正确的有________ .
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41c486c819a815163907c8e130a0e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2bdaf878a32b5aafe31efb5a53d66c.png)
②若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31a236a2101c170576f3c8f8e2edc1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a21f6fe16da2d969c2e3e8a451c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396205b0a9bc291c98ff7c9869a49917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ffdec637a03dfab3ebf53559d9b30b.png)
③对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66240b6fde17c6aa36e745cb7fff5fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8c8fd3bdee0551dd6048a131f9eeb7.png)
④已知p:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f62d654e168aeda48c2b8c7b3b0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c49604b085c2ff679d2f0421cc7f821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d54209e68b27ab4c59f51aa1e6f3d6fd.png)
正确的有
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2020-04-08更新
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2520次组卷
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7卷引用:江西省上高二中2021届高三上学期第一次月考数学(理)试题
江西省上高二中2021届高三上学期第一次月考数学(理)试题山东省潍坊新高考质量测评联盟2018-2019学年高二3月联考数学试题江西省南昌市第二中学2019-2020学年高二下学期期末考试数学(理)试题天津市南开区南大奥宇培训学校2020-2021学年高二上学期第一次月考数学试题(已下线)第03讲 全称量词命题与存在量词命题(教师版)-【帮课堂】2021-2022学年高一数学同步精品讲义(苏教版2019必修第一册)湖北省十堰市郧阳中学2022-2023学年高一上学期10月考试数学试题天津市西青区杨柳青第一中学2022-2023学年高一上学期第一次月考数学试题
名校
2 . 下列说法中
①.对于命题
:存在
,则
:
;
②.命题“若
,则函数
在
上是增函数”的逆命题为假命题;
③.若
为真命题,则
均为真命题;
④.命题“若
,则
”的逆否命题是“若
,则
”.
错误 的是________
①.对于命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba597e8352a03b69668358ad8c195ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375f299a29bdeb3354298df0ec8b6f51.png)
②.命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a7b1fed53370ec89cfa1cc74f06c69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
③.若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb62e0854511fd4034bf2b002882533.png)
④.命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0259dab58a8ccba621f1139c26d1220f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8741619588ac31c0f03336d8161ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13daffe8e543fee00034ff392d403649.png)
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2020-01-15更新
|
533次组卷
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4卷引用:黑龙江省鹤岗市第一中学2020-2021学年高三上学期第一次月考数学(理)试题
黑龙江省鹤岗市第一中学2020-2021学年高三上学期第一次月考数学(理)试题黑龙江省鹤岗市第一中学2020-2021学年高三上学期第一次月考数学(文)试题(已下线)调研测试三(A卷 基础过关检测)-2021年高考数学(理)一轮复习单元滚动双测卷宁夏中卫市海原县第一中学2019-2020学年高二上学期期末数学(理)试题
名校
3 . 下列说法正确的是_________ (请把你认为正确说法的序号都填上).
(1)函数
的最小正周期为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(2)若命题
:“
,使得
”,则
:“
,均有
”
(3)
中,
是
的充要条件;
(4)已知点N在
所在平面内,且
,则点N是
的重心;
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8639eae0325866c58acd33302151d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264dab145ceba44696a6ee63b1e1549d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
(4)已知点N在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202f58538466612afcf186e5c65d9a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
4 . 给出下列四个命题:
①命题“若
,则
”的逆否命题;
②“
,使得
”的否定是:“
,均有
”;
③命题“
”是“
”的充分不必要条件;
④
:
,
:
,
且
为真命题.
其中真命题的序号是________ .(填写所有真命题的序号)
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa3205b1df826d63914dcb55bb3ab43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5426b6d35bef718963baa87e24131c09.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27942582c0d1ae33af058d2412138298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c23a4b7f6952b9e323301bc917a94e99.png)
③命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2053e1f50472a9fed67d4c84d9cb938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10585d17770919fa97fbbfcbd59b3c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676af6b030424b4ac5a941cbde53af05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
其中真命题的序号是
您最近一年使用:0次
2019-11-01更新
|
463次组卷
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2卷引用:甘肃省武威市第十八中学2019年高三上学期10月月考数学试题
5 . 已知函数
(
为实数).
(1)当曲线
与直线
切于点
时,求
,
的值;
(2)设
,如果
在
上恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f19be9a99f38f0e217f315d0361079ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)当曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6668ebeaece0d93ef3e0ffd2aad683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572dac426f859dcb1eecfa75d7d823ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7feeefda492f955aa256d6ef2a3f621b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b0dc000d934faaa3e212c01904add2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cead849c0dc4a82285808a7e081ad75c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2018-03-11更新
|
1087次组卷
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4卷引用:2018年湖南省高三十四校联考文科数学
名校
6 . 下列说法中错误的是__________ (填序号)
①命题“
,有
”的否定是“
”,有
”;
②已知
,
,
,则
的最小值为
;
③设
,命题“若
,则
”的否命题是真命题;
④已知
,
,若命题
为真命题,则
的取值范围是
.
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281b260fe94c42258b7fa8c6bc6cefa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9c2681fd202657c6d22201b738d19c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fdcb0d7eda2baefa352f1a01e6acbdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44d098a68a65c8c2b6c058cb17a903b.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf35d6c316d9a014327ed3fdfeec374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3df1ec9f4cc08c367980b39a931785.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34715101c66fa12ce6baf0a9c53f1672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c988d709ba8cd8aed6cb83d76c0ba89c.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b598308dce900e042d195d6fa0ab67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a6c2a598b6168200d5261996b8e3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ba30151cfe5b33816cb59c11589e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e93d6bae5b58d23fb85b8f54998da17.png)
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2018-02-07更新
|
2134次组卷
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5卷引用:2017届江西省师大附中、临川一中高三1月联考数学(理)试卷
7 . 函数
,若
,使得
都有
,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37a915e369d890670c8af1e8154fe8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc23491b089059ace9e969c19bd1ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4ae5bb621c3c9ef864b81f8db58dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638caa13d2039105f607cc9d9b0f4ab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 给出以下四个命题:
(1)命题
,使得
,则
,都有
;
(2)已知函数f(x)=|log2x|,若a≠b,且f(a)=f(b),则ab=1;
(3)若平面α内存在不共线的三点到平面β的距离相等,则平面α平行于平面β;
(4)已知定义在
上的函数
满足函数
为奇函数,则函数
的图象关于点
对称.
其中真命题的序号为______________ .(写出所有真命题的序号)
(1)命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fbaf82fe2b22d44492a001a7a02466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22551fe4d3f29b606574a48d4233fe7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cd44731d509352f907c9773a42cab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea8c817d58f773e1ab3b1f71165fd1e.png)
(2)已知函数f(x)=|log2x|,若a≠b,且f(a)=f(b),则ab=1;
(3)若平面α内存在不共线的三点到平面β的距离相等,则平面α平行于平面β;
(4)已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ec1cb6fbf02f47e28ab85910ecbc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8874d62dca6d0103ea753da86ac3bc65.png)
其中真命题的序号为
您最近一年使用:0次
2017-12-07更新
|
2417次组卷
|
9卷引用:宁夏回族自治区固原市第一中学2017届高三上学期第5次月考数学(理)试题
宁夏回族自治区固原市第一中学2017届高三上学期第5次月考数学(理)试题【全国校级联考】安徽省肥东县高级中学2019届上学期高三8月调研考试数学(理)试题【全国百强校】山东省济南外国语学校2019届高三上学期第一次月考数学(理)试题(已下线)《2018-2019学年同步单元双基双测AB卷》【文科数学B】第一章第一练集合与简易逻辑(已下线)《2018-2019学年同步单元双基双测AB卷》【文科数学A】第二章第一练基本初等函数与函数性质的应用(已下线)《2018-2019学年同步单元双基双测AB卷》【理科数学A】第二章第一练基本初等函数与函数性质的应用(已下线)《2018-2019学年同步单元双基双测AB卷》【理科数学B】第一章第一练集合与简易逻辑内蒙古乌兰察布市集宁区集宁一中(西校区)2019-2020学年高二上学期12月月考数学(理)试题(已下线)专题01 集合与常用逻辑用语-【备战高考】2021年高三数学高考复习刷题宝典(填空题专练)
名校
9 . 已知
,函数
,
(
是自然对数的底数).
(Ⅰ)讨论函数
极值点的个数;
(Ⅱ)若
,且命题“
,
”是假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5d5f3fced276f3127f2e3c0c428f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9f357eae697e6758b13b7a13b593f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
(Ⅰ)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d176e1fcf07f69f98de820bf524236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6f008ca86a6fe6b2b467254e388cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2017-05-10更新
|
2038次组卷
|
4卷引用:山东省淄博市2017届高三第二次模拟考试数学(理)试题
解题方法
10 . 若存在
,使得不等式
成立,则实数
的取值范围是_______ .
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