等差数列{an},{bn}的前n项和分别为Sn,Tn,且an
两等差数列{an}和{bn},前n项和分别为Sn,Tn,且S
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=
若两个等差数列{an}和{bn}的前n项和分别为Sn和Tn,且满足S
已知等差数列{an},{bn}的前n项和分别为Sn和Tn,若S
等差数列{an},{bn}的前n项和分别为Sn和Tn,若S
设数列{an},{bn}都是等差数列,它们的前n项和分别为sn,Tn
已知等差数列{an}{bn}的前n项和分别为Sn,Tn,若S
已知两个等差数列{an},{bn}的前n项的和分别为Sn,Tn,且S
若两个等差数列{an},{bn}的前n项和分别为Sn,Tn,且满足S
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 ,则an/bn=