已知各项均为正数的数列{an}前n项和为Sn,(p– 1)Sn=p2–an,n ∈N*,p> 0且p≠1,数列{bn}满足bn= 2logpan.
(Ⅰ)若p=
,设数列
的前n项和为Tn,求证:0 <Tn≤4;
(Ⅱ)是否存在自然数M,使得当n>M时,an> 1恒成立?若存在,求出相应的M;若不存在,请说明理由.
(Ⅰ)若p=
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570820088619008/1570820094189568/STEM/25a39ee46e55441d815de7b2d8128525.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570820088619008/1570820094189568/STEM/c620e1b8acf1478996cbe3521719c7fe.png?resizew=35)
(Ⅱ)是否存在自然数M,使得当n>M时,an> 1恒成立?若存在,求出相应的M;若不存在,请说明理由.
11-12高三下·浙江·阶段练习 查看更多[1]
(已下线)2012届浙江省部分重点中学高三下学期3月联考理科数学
更新时间:2016-12-01 17:44:34
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