2014·江西·三模
1 . 下列命题正确的个数是
①命题“
”的否定是“
”;
②“函数
的最小正周期为
”是“
”的必要不充分条件;
③
在
上恒成立
在
上恒成立;
④“平面向量
与
的夹角是钝角”的充分必要条件是“
”.
①命题“
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/a36b2fc82e844d149da61df0e0e2fdac.png)
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/27aa41c84d644deba3c8d5bb228b9d99.png)
②“函数
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/ea83cf6f9325489b951407c9c506d509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/02d58a1d0ab64781802e3dc6a60d335b.png)
③
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/d5c2788bca534259930eaf0ed4fcf787.png)
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/3f57ea409984422099cd3afaf605e966.png)
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/9f57db2e134f45368bb5be5c239adfb8.png)
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/3f57ea409984422099cd3afaf605e966.png)
④“平面向量
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/098f057933d04213946bbee1c7d82330.png)
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/179f50d223604057921128097c8a42eb.png)
![](https://img.xkw.com/dksih/QBM/2014/9/29/1571867019026432/1571867024375808/STEM/575f80ed54cb4fe2a8c5d746f383aaa8.png)
A.1 | B.2 | C.3 | D.4 |
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2016-12-03更新
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181次组卷
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3卷引用:2014届江西师大附中高三三模数学文科数学试卷
12-13高二上·浙江杭州·期末
2 . 下列有关命题的说法正确的是
A.命题“若![]() ![]() ![]() ![]() |
B.命题“若![]() ![]() |
C.命题“![]() ![]() ![]() ![]() |
D.“![]() ![]() |
您最近一年使用:0次