名校
解题方法
1 . 已知命题p:
在区间
上存在单调递减区间;命题q:函数
,且
有三个实根.若
为真命题,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a99bf5e04c52d26cb05168d3678846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c7bf614975509df2b3638048ec1b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a150e569cfea012fb533969ec5cd92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00b96c56efd12d857b97f8273d34963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb9d57cbe246df4aa7b2e12e4aed9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-21更新
|
738次组卷
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6卷引用:2020届陕西省西安中学高三下学期第三次模拟考试数学(理)试题
2020届陕西省西安中学高三下学期第三次模拟考试数学(理)试题(已下线)专题02 函数-2020年高三数学(理)3-4月模拟试题汇编(已下线)文科数学-2020年高考押题预测卷03(新课标Ⅲ卷)《2020年高考押题预测卷》安徽省滁州市定远县重点中学2020-2021学年高三上学期1月质量检测数学(理)试题(已下线)专题09 《导数及其应用》中的存在性问题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册) (已下线)专题1-2 简易逻辑题型归类-2
名校
2 . 下列说法中错误的是__________ (填序号)
①命题“
,有
”的否定是“
”,有
”;
②已知
,
,
,则
的最小值为
;
③设
,命题“若
,则
”的否命题是真命题;
④已知
,
,若命题
为真命题,则
的取值范围是
.
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281b260fe94c42258b7fa8c6bc6cefa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9c2681fd202657c6d22201b738d19c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fdcb0d7eda2baefa352f1a01e6acbdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44d098a68a65c8c2b6c058cb17a903b.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf35d6c316d9a014327ed3fdfeec374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3df1ec9f4cc08c367980b39a931785.png)
③设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34715101c66fa12ce6baf0a9c53f1672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c988d709ba8cd8aed6cb83d76c0ba89c.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b598308dce900e042d195d6fa0ab67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a6c2a598b6168200d5261996b8e3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ba30151cfe5b33816cb59c11589e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e93d6bae5b58d23fb85b8f54998da17.png)
您最近一年使用:0次
2018-02-07更新
|
2134次组卷
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5卷引用:2017届江西省师大附中、临川一中高三1月联考数学(理)试卷
3 . 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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d62778cf443743b33383960b106f29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e20282b44b9a81a094e73325a1e0583.png)
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
其中正确命题的序号是
您最近一年使用:0次
2017-05-10更新
|
883次组卷
|
3卷引用:天津市红桥区2017届高三下学期二模理科数学试题