已知等差數(shù)列{an}滿足:a1=1,d=2,數(shù)列{bn}滿足b1=3,bn≠2且,4(bn-bn+1)=bn-2(n∈N).
(1)證明:數(shù)列{bn-2}是等比數(shù)列;
(2)若數(shù)列{cn}滿足cn=an4n-1(bn-2),求{cn}的前n項(xiàng)和Tn.
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【考點(diǎn)】錯(cuò)位相減法.
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發(fā)布:2024/10/1 2:0:1組卷:215引用:4難度:0.5
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