某商店投入38万元经销某种纪念品,经销时间共60天,为了获得更多的利润,商店将每天获得的利润投入到次日的经营中,市场调研表明,该商店在经销这一产品期间第n天的利润a
n=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806900310234/SYS201311012318069003102018_ST/0.png)
(单位:万元,n∈N
*),记第n天的利润率b
n=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806900310234/SYS201311012318069003102018_ST/1.png)
,例如b
3=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231806900310234/SYS201311012318069003102018_ST/2.png)
.
(1)求b
1,b
2的值;
(2)求第n天的利润率b
n.
考点分析:
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