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已知Sn,Tn分别是等差数列{an},{bn}的前n项和,且=,(n∈N+)则+...
已知S
n,T
n分别是等差数列{a
n},{b
n}的前n项和,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102337046449478/SYS201311031023370464494013_ST/0.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102337046449478/SYS201311031023370464494013_ST/1.png)
,(n∈N
+)则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102337046449478/SYS201311031023370464494013_ST/2.png)
+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102337046449478/SYS201311031023370464494013_ST/3.png)
=
.
考点分析:
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