等差数列{bn}的前n项和为Tn,且根号T1,根号T2,根号T3成等差数列,求{bn}的通项公式

等差数列{bn}的前n项和为Tn,且根号T1,根号T2,根号T3成等差数列,求{bn}的通项公式 等差数列an和bn的前n项和分别为sn和tn,且sn/tn=2n/3n+1,则a5/b5=? 等差数列{an}和{bn}的前n项和分解为Sn和Tn,且Sn/Tn=2n/(3n+1),则a5/b5=? 等差数列｛An｝和｛Bn｝的前n项和分别为Sn和Tn,且Sn/Tn=(2n+1)/(3n+2),则：A6/B6=? 等差数列an,bn的前n项和分别为sn和tn且sn/tn=3n-1/2n+1,求a3/a4的值 已知{an}{bn}都为等差数列,前n项的和分别为Sn,Tn,且Sn/Tn=5n/6n+1,求a5/b5. 已知等差数列an,bn的前n项和为Sn和Tn且Sn/Tn=(4n-5)/(7n+1),则a8/b8= 数列｛bn｝的前n项和为Tn,且Tn满足Tn+1/（4n+1）=Tn/(4n-3)+1,设定b1的值使得数列｛bn｝是等差数列 已知两个等差数列{an}、{bn}的前n项和分别为Sn,Tn,且Sn/Tn=7n+1/4n+27,则a11/b11= 等差数列{an},{bn}的前n项和分别为Sn,Tn,且Sn/Tn=(2n-1)/(3n+2),则a5/b5 等差数列{an},{bn},的前n项和分别为Sn,Tn且Sn/Tn=(3n-1)/(2n+3)则a8/b8=快. 等差数列（an）,（bn）的前n项和为Sn,Tn,且Sn/Tn=2n/3n+1,则a8/b8=? 等差数列{an},{bn},的前n项和分别为Sn,Tn且Sn/Tn=(7n+2)/(3n+4)则a10/b10= 已知an为等差数列,且a2=-8,若等差数列bn满足b1=-8,b2=a1+a2+a3,求bn的前n项和Tn. 等差数列｛an｝｛bn｝的前n项和分别为Sn、Tn,且an:bn=2n-1:3n-1,则S2n+1：T2n+1=? 等差数列{an},{bn}的前n项和分别为Sn,Tn,且an/bn=2n+1/3n+1,则S11/T11=,S2n-1/T2n-1=等差数列{an},{bn}的前n项和分别为Sn,Tn,且Sn/Tn=3n+1/2n+3,则a5/b5=,an/bn= 设数列{an}是首项为a1(a1>0),公差为2的等差数列,前n项和为Sn,且根号S1,根号S2,根号S3成等差数列,（1）求数列｛an｝的通项公式.（2）记bn=an/(2^n)的前n项和为Tn,求Tn. 已知等差数列An的前n项和为Sn,等差数列Bn的前n项和为Tn.且Sn/Tn=2n+3/5n+3...求A9/B9的值