名校
1 . 下列命题正确的个数为( )
①长方体
中,
,
,则异面直线
与
所成角的余弦值为
;
②对于命题:
,
,则命题
的否定:
,
;
③ “
”是“
”的充分不必要条件;
④已知
,
,
,且
,则
的值为
.
①长方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64e76a4c1e5934f51cdca2ffbc8313f.png)
②对于命题:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02491f9709f00a1bc169278fbe01f576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd0737f120bf1bae03b9abbae79e4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654120ab17a29dbae5cf9c43860846ca.png)
③ “
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8adaa3d42ccb9d59e0d6b6f60bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5553e7018e6e14755bbcda2b657c7b03.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b566395b41fc587143d533f9756024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fc7939259f787ce6d557e59bb3dc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b1ba2e2dbab8c7bec0dad6b63fcc5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1e517c0d481c5d62707ed3f6435d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
名校
2 . 给出下列四个命题正确的是______________ :
①函数
在区间
上存在零点;
②将函数
的图象的横坐标变为原来的
倍得到函数
;
③若
,则函数
的值域为
;
④“
”是“函数
在定义域上是奇函数”的充分不必要条件;
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e740c343e9753db2d1234c572b86cac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c3988d58a90ce85be4e65c4a86de45.png)
②将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1b74d7c9c1a2edf8f6a9baf9800790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156c63a644431fc10d6abade54869dcc.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87a9ef1f87936695fb681df932efd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1fcd9f5ba1265e89fd12cc9ebdd77d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f1809559a3eed3cae8aa668f1d6da9.png)
您最近一年使用:0次
名校
3 . 下列说法正确的是( )
A.“![]() ![]() |
B.命题“![]() ![]() |
C.![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
4 . 下列说法错误的是( )
A.命题“若![]() ![]() ![]() ![]() |
B.对于命题![]() ![]() ![]() ![]() |
C.若m,![]() ![]() ![]() |
D.若![]() |
您最近一年使用:0次
5 . 下面有5个命题:
①函数
的最小正周期是
;
②终边在
轴上的角的集合是
;
③在同一坐标系中,函数
的图象和函数
的图象有3个公共点;
④把函数
的图象向右平移
得到
的图象;
⑤角
为第一象限角的充要条件是
.
其中,真命题的编号是______ (写出所有真命题的编号).
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8e4f5b3c0bc0c9a968e9eec375b66a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
②终边在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e46172a358fbf4a8034570b1d62fcfc.png)
③在同一坐标系中,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
④把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596a7dd8d0e306f484c4979e037ae9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c191fdfd08fb94ba6ed45c71f0fbeb.png)
⑤角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff0fcbb9f3fb47e8e7e484e7b32ab5.png)
其中,真命题的编号是
您最近一年使用:0次
2020-02-11更新
|
453次组卷
|
2卷引用:2020届天津市南开中学高三上学期数学统练九试题
名校
6 . 下列判断正确的是
A.“![]() ![]() |
B.函数![]() |
C.当![]() ![]() ![]() |
D.命题“![]() ![]() ![]() ![]() |
您最近一年使用:0次
2019-11-05更新
|
1411次组卷
|
21卷引用:【全国百强校】天津市第一中学2019届高三上学期第三次月考数学(理)试题
【全国百强校】天津市第一中学2019届高三上学期第三次月考数学(理)试题黑龙江省哈尔滨市师范大学附属中学2019-2020学年高三上学期10月月考数学(文)试题黑龙江省哈尔滨市师范大学附属中学2019-2020学年高三上学期10月月考数学(理)试题河北省“五个一”名校联盟2019-2020学年高三上学期一轮复习收官考试数学(理)试题河北省三河市第三中学2020届高三上学期12月月考数学(理)试题江西省南昌市进贤县第一中学2021届高三上学期第一次月考数学(文)试题河北省深州市长江中学2022届高三上学期10月月考数学试题安徽省滁州市定远县育才学校2021-2022学年高三上学期第一次月考数学(理)试题【市级联考】四川省成都市2019届高三毕业班第一次诊断性检测数学(文)试题【市级联考】四川省成都市2019届高三第一次诊断性检测数学(理)试题【市级联考】四川省成都市2019届高三第一次诊断性检测数学(文)试题(已下线)专题1.2 命题及其关系、充分条件与必要条件(练)【理】-《2020年高考一轮复习讲练测》(已下线)专题1.2 命题及其关系、充分条件与必要条件(练)【文】-2020年高考一轮复习讲练测(已下线)专题7.4 不等式(单元测试)(测)【文】-《2020年高考一轮复习讲练测》(已下线)1.2常用的简易逻辑用语[理]-《备战2020年高考精选考点专项突破题集》(已下线)1.2常用的逻辑用语[文] -《备战2020年高考精选考点专项突破题集》2020届江西省南城县第一中学高三上学期期末数学(理)试题吉林省洮南市第一中学2020-2021学年高三上学期期中考试数学试题(理)(已下线)12. 选填专项训练(12+4)[文] -《备战2020年高考精选考点专项突破题集》(已下线)12.选填专项训练(12+4)[理]-《备战2020年高考精选考点专项突破题集》贵州省思南中学2018-2019学年高二下学期期末数学(文)试题
名校
7 . 对于
,有如下命题:
若
,则
一定为等腰三角形.
若
,则
一定为等腰三角形.
若
,则
一定为钝角三角形.
若
,则
一定为锐角三角形.
则其中正确命题的序号是______
把所有正确的命题序号都填上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b84dd9019efb6439f01b7d90d18d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b1cac68231d337759ec59bc519ea39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e41bc3912c8f248ca91e1ee382f0435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e636bddc1a3d7c006ac304e96cd2551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827716804026d84f6e86aea99a546b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
则其中正确命题的序号是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce8411079aca57f17d3ead32798f055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
您最近一年使用:0次
2018-08-16更新
|
3435次组卷
|
7卷引用:2020届天津市南开中学高三第一学期数学统练八试题
名校
8 . 下列四个命题:
①在三角形
中,“
”是“
”的充要条件;
②“
,
”的否定是“
,
”;
③若函数
的图像关于
对称,则函数
一定是偶函数;
④数列
是等差数列,且公差
,数列
是等比数列,且公比
,则
,
均为递增数列.其中正确命题的个数有
①在三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7c4edd5505d68c66beec9f32f22d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba775e0260ffbe30df0600b8dc5cf5fb.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be344d1925b25e44f3f8b34d2c193ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
④数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ce64685821c3e55c07f151996ca8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
名校
9 . 以下4个结论:
①若
,则
;
②“命题
为真”是“命题
为真”的必要不充分条件;
③当
时,方程
有4个不等的实根;
④设
为偶函数,则函数
的图象关于直线
对称.
其中正确结论的个数是
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f1bffc18548abd31c36c7c9228e8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56991507b188d1265b397080c907e252.png)
②“命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232961f0b0cbe58baf7522762876dfbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df9b89509a5c5c8430acf64fd7cd72a.png)
④设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ea36101bd7f0cefa20125125903e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
其中正确结论的个数是
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
10 . 下列有关命题的叙述,错误的个数为
①若p
q为真命题,则p
q为真命题.
②“
”是“
”的充分不必要条件.
③命题P:
x∈R,使得x
+x-1<0,则
p :
x∈R,使得x
+x-1≥0.
④命题“若
,则x=1或x=2”的逆否命题为“若x
1或x
2,则
”.
①若p
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/0147ceaffe86499ca7dc05b4386d531e.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/603ae575847f4ede8a1a623909ad4efe.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b450d29b6f2de27719405c39b470a6d.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/8cda6a802cc5468e8d6b66978215560c.png)
③命题P:
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/f8ba93be6f6a4f11af0dba8f7d4238fa.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/93a1e944f8db4587b3312c17253c15fd.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/3dfafc979b374b979002cab0bb6672a3.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/c8438c66e21c4f25a0fc4c4fc8c30de0.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/93a1e944f8db4587b3312c17253c15fd.png)
④命题“若
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/b31baab8d2a54c9386058311c1944c68.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/a4a5b672dec44477af0df58cc652a6b4.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/a4a5b672dec44477af0df58cc652a6b4.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990158360576/1571990163857408/STEM/11a950ea33864e71aaa099cd8c831634.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2016-12-03更新
|
420次组卷
|
2卷引用:2015届天津市第一中学高三上学期第二次月考文科数学试卷