题型:单选题
难度:0.85
引用次数:1014
题号:11030887
若正数
满足
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536cf54ee2dc900f8fa0848cddd3df15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3836619ba47499fca6df4e5182da9d.png)
A.![]() | B.![]() | C.5 | D.25 |
更新时间:2020-08-30 23:34:57
|
【知识点】 基本不等式“1”的妙用求最值
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较易
(0.85)
名校
解题方法
【推荐1】若
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9d2785a3b42a41eb32222da1d84804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】如图,已知抛物线
的焦点和圆
的圆心重合,过
圆心的直线与抛物线和圆分别交于P,Q,M,N,则
的最小值为( )
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642582974873600/2643243351523328/STEM/e92fcd2d74784c0ab8f4853a997f0561.png?resizew=265)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dae9a535aba289cbefafd43c3116002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2080d10bcdd78fc0a9fe15db33c15b1b.png)
![](https://img.xkw.com/dksih/QBM/2021/1/23/2642582974873600/2643243351523328/STEM/e92fcd2d74784c0ab8f4853a997f0561.png?resizew=265)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次