若实数
,
满足约束条件
,若
恒成立,则实数m的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79236386ae2249a55a2db3dbbc7be3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b0b5e8a3e41d549312fe5391488a32.png)
A.![]() | B.![]() | C.![]() | D.![]() |
21-22高三下·浙江·开学考试 查看更多[2]
更新时间:2022-02-18 09:26:41
|
【知识点】 根据最优解或最值求参数解读
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单选题
|
适中
(0.65)
【推荐1】已知不等式组
表示的平面区域为
.若平面区域
内的整点(横、纵坐标都是整数的点) 恰有3个,则整数
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fc4a2a1031519090c9271163d6f1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】对两个实数
,定义运算“
”,
.若点
在第四象限,点
在第一象限,当
变动时动点
形成的平面区域为
,则使
成立的
的最大值为
![](https://img.xkw.com/dksih/QBM/2013/12/10/1571432532557824/1571432537907200/STEM/76fb33b0c66942248fa343071bdf8a46.png)
![](https://img.xkw.com/dksih/QBM/2013/12/10/1571432532557824/1571432537907200/STEM/cda9680616e84d1bb99b11f10fea7ba6.png)
![](https://img.xkw.com/dksih/QBM/2013/12/10/1571432532557824/1571432537907200/STEM/996225a5901a4f94b954a1fd9b197424.png)
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![](https://img.xkw.com/dksih/QBM/2013/12/10/1571432532557824/1571432537907200/STEM/3582bcb434ac4f10a804545d06bf9fa2.png)
![](https://img.xkw.com/dksih/QBM/2013/12/10/1571432532557824/1571432537907200/STEM/408c7c016a0244bda9c4239f08f2e86f.png)
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![](https://img.xkw.com/dksih/QBM/2013/12/10/1571432532557824/1571432537907200/STEM/ef7cc54dd6124708b7ae8aba5a0eb19f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次