等差数列{an}{bn},Sn,Tn分别是前n项和,且Sn/Tn=(7n+1)/(n+3),则（a2+a5+a17+a22)/(b8+b10+b12+b16)=

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的表达式 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 等差数列｛an｝,｛bn｝的前n项分别为Sn,Tn,若Sn/Tn=2n/3n+1,则an/bn=多少? 等差数列{an},{bn}的前n项和分别为Sn,Tn,若Sn/Tn=2n/3n+1 ,则an/bn= 等差数列an`bn`的前n项和分别为Sn`Tn.若Sn/Tn=(7n+1)/(4n+27),求an/bn 等差数列｛an｝,｛bn｝的前n项和分别为Sn,Tn,An/Bn=(7n+1)/(4n+27) 求Sn/Tn 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. 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. 等差数列An,Bn的前n项合分别为Sn和Tn,若Sn/Tn=2n/3n+1,求An/Bn的表达式. 已知两个等差数列{an},{bn}的前n项的和分别为Sn,Tn.若Sn/Tn=(5n+3)/(2n-1).求an/bn 已知等差数列an,bn,的前n项和分别为Sn,Tn,若Sn/Tn=2n/3n+1,求an/bn, 等差数列{An},{Bn}的前n项和分别为Sn与Tn.若Sn/Tn=2n/(3n+1),则An/Bn=____.等差数列｛An},{Bn}的前n项和分别为Sn与Tn.若Sn/Tn=2n/(3n+1),则An/Bn=____. 求极限等差数列an和bn等差数列an和bn的前n项和分别用Sn和Tn表示 若Sn/Tn=4n/3n+5 则liman/bn的值为多少 等差数列｛an｝｛bn｝的前n项和分别为Sn,Tn 若Sn/Tn=2n/3n+1 求a7/b3 两等差数列{an}和{bn},前n项和分别为Sn,Tn且Sn/Tn=7n+2/n+3则a2+a20/b7+b15= 等差数列{an}与{bn}的前n项和分别为Sn和Tn,若Sn/Tn=(3n-2)/(2n+1),求a7/b7 等差数列{an}和{bn}的前几项和分别为Sn和Tn,若Sn:Tn=2n:(3n+1),求a7:b7 等差数列{an},{bn}的前n项和分别为Sn,Tn,若Sn/Tn＝2n/3n+1,则a5/a7=