已知等差数列{a
n}的公差大于0,且a
3,a
5是方程x
2-14x+45=0的两根,数列{b
n}的前n项的和为S
n,且S
n=1-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101136650988044/SYS201311031011366509880018_ST/0.png)
(1)求数列{a
n},{b
n}的通项公式;
(2)记c
n=a
nb
n,求证c
n+1≤c
n.
考点分析:
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