已知数列{
}满足
,若对任意正整数
都有
恒成立,则k的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b2f970ae16c22cf1c71bac3f26d6f6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21007d2c954e5cf27863bfd169f4ef55.png)
更新时间:2023-11-18 18:13:09
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