若等差数列{an}{bn}的前n项和为Sn和Tn,且Sn/Tn=(2n-1)/(n+3),则a7/b7=___an/bn=__
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已知两个等差数列{an}和{bn}的前n项和分别为An和Bn,
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计算等差数列{an}{bn}的前n项和分别为An.Bn,且An/Bn=2n/(n+1)求limn→∞(an/bn)
等差数列问题,疑惑,等差数列an bn的前n项和是S T S/T=2n/(3n+1)求an/bn怎么求,
(1)若两等差数列{an},{bn}的前n项和分别为An,Bn,满足An/Bn=(7n+1)/(4n+27),则a11/b11的值为( )(2)已知等比数列{an},首项为81,数列{bn}满足bn=log3(an),其前n项和为Sn.①证明{bn}为等差数列;
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两个等差数列{an},{bn}的前n项和分别为Sn,Tn,若Sn/Tn=2n/3n+1,求an/bn.