已知数列
的前n项和为
,且
,若
恒成立,则实数
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc16c472be02cb0cdbfe19fd7e22110a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14540b4f9d6f2b487b84814d20951ff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
更新时间:2023-05-21 22:22:43
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