实数x,y满足x+2y=4,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2736f4661f02df6538e3e3b7f916fb3f.png)
A.18 | B.12 | C.![]() | D.![]() |
更新时间:2021-01-10 21:48:58
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相似题推荐
单选题
|
容易
(0.94)
解题方法
【推荐1】已知
,
,且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ef3923b85ff2ddc5eb57638567c447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
单选题
|
容易
(0.94)
名校
【推荐2】已知
,
,
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a8f4f4b9a63a58c3a4b53bd5b770d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d66a894fe1c8dddb41d9e4885e979a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f492143dbad603d1dc9a45ec39e2f801.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次