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=
{an},{bn}是两个等差数列,其前n项和分别为Sn和Tn,且Sn/Tn=(7n+2)/(n+3),则a8/b8=
设数列{An},{Bn}的前n项和为Sn,Tn,且Sn/Tn=7n+2/n+3,则A8/B8=?
已知等差数列{an}、{bn}的前n项和分别为Sn、Tn,若Sn/Tn=【7n+1】/【4n+27】,则an/bn=
有关等差数列的数学题已知等差数列{an},{bn}的前n项和分别为Sn,Tn,且Sn/Tn=(3n+2)/(2n+1),
1.已知两个等差数列An,Bn,前n项和分别为Sn,Tn,且Sn/Tn=(2n+2)/(n+2),则An/Bn=
设两个等差数列{an},{bn}的前n项和分别为Sn,Tn.若Sn/Tn=7n+1/4n+27,则a7/b7=
已知两个等差数列{an}和{bn}的前n项和分别是Sn和Tn,且Sn/Tn=7n十1/4n十27,则a11/b11的值为
已知两个等差数列{an},{bn}的前n项和分别是Sn,Tn,若 Sn/Tn =(2n)/(3n+1),则 an/bn=
等差数列{An},{Bn}的前n项和为Sn与Tn,若Sn/Tn=2n/3n+1,则An/Bn的值是?
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=
已知数列{an},{bn}都是等差数列,其前n项和为Sn,Tn,且Sn/Tn=(n+1)/(2n-3)
设等差数列{an}与{bn}的前n项之和分别为:Sn与Tn,且Sn/Tn=(6n+2)/(2n+3),求a8/b8的值