已知命题
当
时,
恒成立;命题
对任意的
,不等式
恒成立,若命题
是真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69303621c56f67b4ec4e0ac575deb554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3524a9817855883940ccf7b5b5c2cbc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0c532c8d547e483fae534876ef141c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-02-04 08:00:13
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【推荐1】设p:方程
有两个不相等的正根;q:方程
无实根.求使p或q为真,p且q为假的实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ea5c1de4b41af90aa3c1d51144fa57.png)
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【推荐2】已知
,设命题
函数
在
上单调递增;命题
不等式
对任意
恒成立,若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cd0299f2b7ce18b32f69018b413fc6.png)
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【推荐1】已知命题
,命题
.
(1)若命题
为假命题,求实数
的取值范围;
(2)若命题
和
均为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d31422db8ee0289898cab105199f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7551793ed0995926a6682cfc465e8831.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05cc4f51adf857a4b1f982222535a5ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知命题
对
,都有
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,使得
,如果“
”是真命题,且“
”是假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1814fd0ba31fd2d921f834b0b9f5c7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa0583842bff0b9ac0a539656f88099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e5456923795b2604e8fc05e3e098bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
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