2021·全国·模拟预测
解题方法
1 . 已知函数
,且对任意的实数x,
恒成立.若存在实数
,
,…,
(
),使得
成立,则n的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e148c2d66dc6aaaac4dad2ed81749b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0778b0ca91abc0d97e4401bdc7bcf04e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e205cb627036207d5380e59ea218cd63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70292ffe1c99c62d87d8be70416efd0b.png)
A.25 | B.26 | C.28 | D.31 |
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