已知命题
,命题
,则在命题
,
,中真命题是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201bba2f1ef7d3f9fdf79ce8ffdf759a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22bdc4722c7e49039dbbf51d3bcdfd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4a3b84f878e47739275242623d6b27.png)
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2019高三·江苏·专题练习 查看更多[1]
(已下线)学科网2019年高考数学一轮复习讲练测1.2常用逻辑用语【江苏版】【讲】
更新时间:2018-09-02 14:27:55
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填空题-单空题
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适中
(0.65)
【推荐1】给出如下命题:① “在
中,若
,则
”为真命题;②若动点
到两定点
的距离之和为
,则动点
的轨迹为线段;③若
为假命题,则
都是假命题;④设
,则“
”是“
”的必要不充分条件;⑤若实数
成等比数列,则圆锥曲线
的离心率为
;其中所有正确命题的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19acddff4cb3831a8e8974e532c05242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0b0da26aac472886b8345cfb9bf8ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16688590aa75a979cc269d934f1bf899.png)
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您最近一年使用:0次
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【推荐2】已知c>0,设p:函数y=cx在R上递减;q:函数f(x)=x2-cx的最小值小于-
.如果“p或q”为真,“p且q”为假,则实数c的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ecbd507ee0d803b1c11dae4fa079533.png)
您最近一年使用:0次
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【推荐1】已知c>0,设p:函数y=cx在R上递减;q:函数f(x)=x2-cx的最小值小于-
.如果“p或q”为真,“p且q”为假,则实数c的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ecbd507ee0d803b1c11dae4fa079533.png)
您最近一年使用:0次
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名校
【推荐2】由命题
:“矩形有外接圆”,
:“矩形有内切圆”组成的复合命题“
或
”“
且
”“非
”形式的3个命题中真命题有__________ 个(只填真命题的个数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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您最近一年使用:0次
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名校
【推荐1】已知命题
的解集为
,命题
是
成立的充要条件.有下列四个结论:①“
且
”为真;②“
且
”为真; ③“
或
”为真; ④ “
或
”为真.其中,正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5154f187389b813cc542fa2152f92c7a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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您最近一年使用:0次
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(0.65)
【推荐2】已知下列命题:
①函数
有最小值2;
②“
”的一个必要不充分条件是“
”;
③命题
:
,
;命题
:
,
.则命题“
”是假命题;
④函数
在点
处的切线方程为
.
其中正确命题的序号是__________ .
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a058d8324895232b181a5a50eb27ec.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0b663c96a45e8031dde30026ad204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
③命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccd7af9298cd5ff19d8866fedb42ec4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e29e70dc0bc2a9cf1a5feb67d439566.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ffe13a3112acf545ee550cab301cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
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其中正确命题的序号是
您最近一年使用:0次