1 . 已知函数
,
,给出下列3个命题:
:若
,则
的最大值为16.
:不等式
的解集为集合
的真子集.
:当
时,若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
,
恒成立,则
.那么,这3个命题中所有的真命题是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d11d85741b2a78c4c8099e93182cbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04feb4c8471abaf404dee60276f37578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be07495dbc744e1ecabac66f748218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b669deac956c131bb17a1a68027409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6114c9e15216f4646012c22346583c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f014f17c0af5a1b3506bf05fc428ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eecdd7e6a66d50fc9816e73ab5a8f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2b4b73cd3b267de3aa9ed187601d2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4503967e383ee3557537cd49bc4ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b0f39a3ea986f67cf864d6e0906610.png)
A.![]() ![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次
2 .
,
,
三个学生参加了一次考试,
,
的得分均为70分,
的得分为
分.已知命题
:若及格分低于70分,则
,
,
都没有及格.在下列四个命题中,为
的逆否命题的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f64730802070a68d4f854b332a24814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.若及格分不低于70分,则![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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3 . 下列命题是真命题的为
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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4 . 下列命题中,正确的序号是________ .①存在
,使得
② 若
,则
③ “
”是“
”的充要条件④若函数
在
有极值
,则
或
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee21db6628e4db3f5831370549fa96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b684222b196673f8e6ee9e73931b2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4de9cbec6024f5ee2dc3636de55030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4396ab83803cb86dceb4f0dd72f05111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c462ebeb0d4b1614f35933d5145026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e280e3dc7c79c0cd2ce6da7ef36bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e328c20ada7164298ca70ceb5d5194ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613ddc0b7a43d3f99a672632d7a13baf.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572658740379648/1572658746499072/STEM/6dbf9baa0fad440ea8857dea1532fe3f.png?resizew=71)
您最近一年使用:0次
名校
5 . 下列命题正确的是( )
A.命题:若![]() ![]() ![]() ![]() |
B.命题:![]() ![]() ![]() ![]() |
C.命题:存在四边相等的四边形不是正方形,该命题是假命题. |
D.命题:![]() ![]() |
您最近一年使用:0次
2016-12-04更新
|
240次组卷
|
3卷引用:2015-2016学年江西省赣州市十三县高二下学期期中文科数学试卷
6 . 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
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7 . 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
8 . 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)
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9 . 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
10 . 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