1 . 有下列五个命题:
①在平面内,
、
是定点,
,动点
满足
,则点
的轨迹是椭圆;
②“在
中,
”是“
三个角成等差数列”的充要条件;
③“x=0”是“x≥0”的充分不必要条件;
④已知向量
是空间的一个基底,则向量
也是空间的一个基底;
⑤直线
,则
的充要条件是
.
其中真命题的序号是________ .
①在平面内,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4428ec56246b35cb87bfe7ed50f0ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572536356929536/1572536363032576/STEM/71a109bdc619488e87d23bfe384e3328.png?resizew=124)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
②“在
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572536356929536/1572536363032576/STEM/12aa1c2aa663487998465e70661c859f.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572536356929536/1572536363032576/STEM/b5974e772bd6487f8a73b923276025fa.png?resizew=67)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572536356929536/1572536363032576/STEM/c6421a07e3044cb2a6e28d6418e1808c.png?resizew=84)
③“x=0”是“x≥0”的充分不必要条件;
④已知向量
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572536356929536/1572536363032576/STEM/53b4f84d62294aa29060276bcbf7d8fd.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2016/3/14/1572536356929536/1572536363032576/STEM/45864baaedb64133a95d65378095fb18.png?resizew=87)
⑤直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2784076ca8745aa95dbba0d853104ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a9306db4c13f449bb6f41fc97865dc.png)
其中真命题的序号是
您最近一年使用:0次
2 . 已知函数
(其中
),
.
(1)若命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
是假命题,求
的取值范围;
(2)若命题
,命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a01f316dd76fedb4c52895ee09f9e2.png)
满足
或
为真命题,若
是
的必要不充分条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ca95dc8969f707813fb274e73449e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd2e8310219ce71e675413a05eb9cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7480a34547000884d7121838fcd4a04d.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe841bd928ff1e0866c749f8121bf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183279b2b5f45e8be9860e238c370ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a01f316dd76fedb4c52895ee09f9e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572497088020480/1572497094090752/STEM/2f8a1de6787b4c24af149221914cfaa5.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572497088020480/1572497094090752/STEM/9694c0eec1e94ddbbf4f6c7b12d5a35c.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572497088020480/1572497094090752/STEM/a4aaf82f688b48aca7b7f81ab2198626.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572497088020480/1572497094090752/STEM/139cc835186747309df478b53a5bc404.png)
![](https://img.xkw.com/dksih/QBM/2016/2/24/1572497088020480/1572497094090752/STEM/07cf52bd4f35453c964f5536d3645205.png)
您最近一年使用:0次
名校
3 . 下列命题:
① 命题“若
,则
” 的逆否命题为:“若
,则
”
② “
” 是 “
”的充分不必要条件
③若
为假命题,则
均为假命题
④对于命题
,使得
,则
,均有
,说法错误的是__________ .
① 命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a8a2a94168af9b16ce89271a5d8dc6b.png)
② “
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
④对于命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d3886a07c87033f8e2ca50dd5ab5bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264dab145ceba44696a6ee63b1e1549d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06094f068ae2962cfffbd77a44fa2204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
您最近一年使用:0次
2016-12-04更新
|
632次组卷
|
8卷引用:江西省赣州市兴国县将军中学2021-2022学年高一上学期期中数学试题
江西省赣州市兴国县将军中学2021-2022学年高一上学期期中数学试题2016届河北省冀州市中学高三上学期期中考试理科数学A卷2015-2016学年山东济南一中高二上学期期末文科数学试卷2016-2017学年广东省揭阳市第一中学高二下学期第一次阶段考试数学(文)试卷2016-2017学年湖南省长沙市第一中学高二下学期第一次月考数学(理)试卷广东省揭阳市第三中学2017-2018学年高二上学期期末考试数学(文科)试题(已下线)第一章+预备知识(能力提升)-2020-2021学年高一数学单元测试定心卷(北师大2019版必修第一册)第一章 预备知识 单元测试-2020-2021学年高一数学北师大2019版必修第一册
4 . 已知函数
(其中
),
.
(1)若命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
是假命题,求
的取值范围;
(2)若命题
,命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a01f316dd76fedb4c52895ee09f9e2.png)
满足
或
为真命题,若
是
的必要不充分条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ca95dc8969f707813fb274e73449e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd2e8310219ce71e675413a05eb9cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7480a34547000884d7121838fcd4a04d.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe841bd928ff1e0866c749f8121bf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183279b2b5f45e8be9860e238c370ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a01f316dd76fedb4c52895ee09f9e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe826b10d86a9d42b7da2c708393efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f832dacfb65b30a4369c215c1d2551f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f914390f2342183379774059224afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02475842a0c8318db41c5c38c3af7e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
5 . 给出下列几个命题:
①命题“若
,则
”的逆否命题为假命题;
②命题
:任意
,都有
,则
:存在
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3ecba19917cb95ee17b82f1b4877c4.png)
③命题
:存在
,使得
;命题
:
中,
,则命题“
且
”为真命题
④方程
表示椭圆的充要条件是
.
⑤对空间任意一点
和不共线的三点
,若
,则
四点共面.
其中不正确的个数( )
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4120436d6ff0c58109473edc068257c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb8898d840443e228d34d94056f081e.png)
②命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05611fbe265ef9e3d4a8b1821bcbc1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070054c0b4182ab7399ed56925844e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3ecba19917cb95ee17b82f1b4877c4.png)
③命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070054c0b4182ab7399ed56925844e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be91c54832cbb241b6a32cb0fab85825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60775575f4aa98407260a240a0a75ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
④方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcc6b9277b4ebf983ee846923230c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d225bb3f1984613ca62d737f6f2a8308.png)
⑤对空间任意一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e739c2d4754a7421f8b20e3b5bc09074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a0889f0f80987c260cce05be4c84b0.png)
其中不正确的个数( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
6 . 下列说法正确的是
A.命题“![]() ![]() |
B.命题“若![]() ![]() ![]() ![]() ![]() ![]() |
C.若命题![]() ![]() |
D.“![]() ![]() |
您最近一年使用:0次
2016-12-04更新
|
153次组卷
|
2卷引用:2015-2016学年江西省高安中学高二上期中文科数学试卷
7 . 下列说法正确的是
A.命题“若![]() ![]() ![]() ![]() ![]() |
B.命题“![]() ![]() |
C.“![]() ![]() ![]() |
D.已知命题P:![]() ![]() ![]() |
您最近一年使用:0次
8 . 下列命题中,正确的是 .
A.存在![]() ![]() |
B.“![]() ![]() |
C.若![]() ![]() |
D.若函数![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2016-12-03更新
|
238次组卷
|
4卷引用:2016届江西省临川一中高三上学期期中理科数学试卷
名校
9 . 下列有关命题的说法错误的是
A.命题“若![]() ![]() ![]() ![]() |
B.“![]() ![]() |
C.若![]() ![]() ![]() |
D.对于命题![]() ![]() ![]() ![]() |
您最近一年使用:0次
2016-12-03更新
|
1805次组卷
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2卷引用:江西省峡江中学2021-2022学年高二11月期中考试数学(理)试题
11-12高二下·河北衡水·期中
名校
10 . 有下列四个命题,其中真命题有
①“若
,则
、
互为相反数”的逆命题
②“全等三角形的面积相等”的否命题
③“若
,则
有实根”的逆命题
④“不等边三角形的三个内角相等”的逆否命题
其中真命题的序号为:
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②“全等三角形的面积相等”的否命题
③“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f8c9a7302470b0de565fa20a0f5a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d55dec8c5df4d73ded126f050748da1.png)
④“不等边三角形的三个内角相等”的逆否命题
其中真命题的序号为:
A.①② | B.②③ | C.①③ | D.③④ |
您最近一年使用:0次
2016-12-03更新
|
569次组卷
|
17卷引用:江西省南昌市第二中学2019-2020学年高二上学期期中考试数学(文)试题
江西省南昌市第二中学2019-2020学年高二上学期期中考试数学(文)试题(已下线)2011-2012学年河北省枣强县中学高二第二学期期中考试文科数学试卷(已下线)2011-2012学年湖北省部分中学高二下学期联考文科数学试卷(已下线)2011-2012学年湖南省浏阳一中高二上期中文科数学试卷(已下线)2011-2012学年浙江富阳场口中学高二下学期期中文科数学试卷(已下线)2012-2013学年福建省南安一中高二上学期期中考试文科数学试题2014-2015学年四川省广元实验中学高二下学期期中考试理科数学试卷2014-2015学年四川省广元实验中学高二下学期期中考试文科数学试卷2015-2016学年甘肃省嘉峪关市一中高二上学期期中考试理科数学试卷(已下线)2012年苏教版高中数学选修2-1 1.1命题及其关系练习卷吉林省长春外国语学校2016-2017学年高二下学期期末考试数学试题甘肃省天水市第一中学2016-2017学年高二下学期期末考试数学(理)试题甘肃省天水市第一中学2016-2017学年高二下学期期末考试数学(文)试题甘肃省天水市第三中学2018届高三上学期第二次阶段检测考试数学(文)试题甘肃省天水市第三中学2018届高三上学期第二次阶段检测考试数学(理)试题甘肃省天水三中2018届高三上学期第二次阶段检测考试(理)数学试题甘肃省甘谷县第一中学2018届高三上学期第一次月考数学(文)试题