若
,
,且
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5678f1a5e69a9f636349cea2fe800926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-04-12 01:37:28
|
【知识点】 基本不等式“1”的妙用求最值
相似题推荐
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】已知P为棱长为
的正四面体
各面所围成的区域内部(不在表面上)一动点,记P到面
,面
,面
,面
的距离分别为
,
,
,
,若
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b53eab97158937f92039c1e133b0f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f285174fbf90a9742de57c1e53224cff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e8854159e7443b5fe53436bf9e367f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bfaa3805eae0211e2eb354fbe41ef5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31f9e339a7732864990e825652d8647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecadd39d44a0740a03a0304b8d618b65.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】正实数
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2660b3f6408551fc0a6214acdbd92713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43bf5bd776595caa2641b948160be38e.png)
A.![]() | B.1 | C.2 | D.![]() |
您最近一年使用:0次