正项数列{an}的前n项和为Sn,且
对于任意的n∈N*均为成立.
(1)求a1,a2,a3;
(2)猜想数列{an}的通项公式并证明;
(3)比较
与
的大小并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ab359f97b46f33828f20d06b65b26e.png)
(1)求a1,a2,a3;
(2)猜想数列{an}的通项公式并证明;
(3)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e578f650290b29627cdb1402c945cfcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2d2ba6c5ad2b2d548b39855a36c98b.png)
更新时间:2019-05-04 14:46:13
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(1)若函数
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(2)①当
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(2)证明:
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(3)若存在正整数
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(II)若函数
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