名校
1 . 命题P:ax2+2x﹣1=0有实数根,若¬p是假命题,则实数a的取值范围是( )
A.{a|a<1} | B.{a|a≤﹣1} | C.{a|a≥﹣1} | D.{a|a>﹣1} |
您最近一年使用:0次
2020-01-04更新
|
415次组卷
|
5卷引用:内蒙古乌兰察布市2021-2022学年高二上学期期末考试数学(理)试题
2013·北京西城·二模
名校
2 . 已知命题
函数
在
上单调递增;命题
不等式
的解集是
.若
且
为真命题,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c857abb6c8c36ac67cb596ab36519f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4dbab09d31e824f02733bf2bc11e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.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/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次