名校
1 . 当
时,
的最小值为4 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ad8175214b7ae238425e65c09a2db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53700984a41d6757e97dbac2b1beaa9.png)
您最近一年使用:0次
名校
2 . 已知
,则
的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca8b26c3ad6d892590290a2304126bd.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635ba93fc279e47963ff77285d7a2337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca8b26c3ad6d892590290a2304126bd.png)
您最近一年使用:0次