2011·河南焦作·一模
解题方法
1 . 下列命题为真命题的是( )
A.函数![]() |
B.已知命题![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.“![]() ![]() |
D.存在实数![]() ![]() ![]() ![]() |
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2010·江苏苏州·一模
2 . 给出两个命题:
的充要条件是
为正实数;
:存在反函数的函数一定是单调函数,则下列复合命题中的真命题是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3fe94db6d31418d51a52cc0a733fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
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2010·河南开封·一模
3 . 已知命题
,
;和命题
,
,则下列命题为真的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44bef5e2df41b92f8aa7319710f79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37660096fb35820bc02bb27d58195fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4ac5906ff53a555ad1c20ec6fe4e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40b5bd7473999e426415ab37659273a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2010·广东·一模
4 . 已知命题
:“
”,命题
:“
”.
若命题“
且
”是真命题,则实数
的取值范围为
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569786534821888/1569786539941888/STEM/8671e6bbf5e442e089953b7a8d10e48b.png)
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569786534821888/1569786539941888/STEM/aa16bdf663044b469f77e16c773e886f.png)
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569786534821888/1569786539941888/STEM/2ad3999c1cd947ff8d84d4686c48c60e.png)
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569786534821888/1569786539941888/STEM/5841d84635654c8a9b9596f10ac47e22.png)
若命题“
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569786534821888/1569786539941888/STEM/8671e6bbf5e442e089953b7a8d10e48b.png)
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569786534821888/1569786539941888/STEM/2ad3999c1cd947ff8d84d4686c48c60e.png)
![](https://img.xkw.com/dksih/QBM/2010/7/8/1569786534821888/1569786539941888/STEM/402ff77e248b415eae3b4a20ab234e7f.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2010·河北·一模
5 . 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
2010·广东·一模
6 . 已知:﹁p且q为真,则下列命题中的假命题是:( )
① p;② p或q; ③ p且q; ④﹁q
① p;② p或q; ③ p且q; ④﹁q
A.① ④ | B.① ② ③ | C.① ③ ④ | D.② ③ ④ |
您最近一年使用:0次