已知
,
,
,则
的最小值为________ .
![](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/fd98ce07e05c58d83a48d90dfcb28fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5aeb3d26cd665d59d613763d16907a.png)
更新时间:2020-12-04 13:56:33
|
【知识点】 基本不等式求和的最小值解读
相似题推荐
填空题-单空题
|
较易
(0.85)
解题方法
【推荐1】设有下列四个命题:
①
:
,
为假命题,则
;
②
:函数
的最小值为
;
③
:关于x的不等式
对
恒成立的一个必要不充分条件是
;
④
:设函数
,如果
,且
,令
,那么t的最小值为
;
则上述命题为真命题的序号是______ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8645952ea14b25443f411d39bdec641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c87eb8137ce3382b4293198436a265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfde5b1896673601e3fa759d59222f8.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473f2c419c507e8533ba0fb5c46c6c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbdf7979741a56ddd09cf18990555cb.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926477935bcda6bd9f8c2adb64a2c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41c6b9fa72109ba69163a5c6b7874a2.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb61b4fc30ebe75d4419201973a3d4f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eae51f0310b87cde2e206643e9d25a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d672acf3a02a9b92b67a9defc0be449e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d4a254c1d4ce01dc17b862dd719bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f322feb3814b978ac74168d97eb1ccd9.png)
则上述命题为真命题的序号是
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
解题方法
【推荐2】已知
,
是非零实数,若关于
的不等式
恒成立,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9cb6a1d68368765aa7db745795b729d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22416e6a126ffa906bc6657993220241.png)
您最近一年使用:0次