等差数列{an} {bn}前n项和为An Bn,An/Bn=(7n+2)/(4n+27),求an/bn

等差数列{an},{bn}的前n项和分别为An,Bn,切An/Bn=2n/3n+1,求lim(n→∞)an/bn 已知{an},{bn}均为等差数列,前n项的和为An,Bn,且An/Bn=2n/(3n+1),求a10/b10的值 关于数列和 不等式.1.若两等差数列｛an｝｛bn｝的前n项和为 An Bn ,满足(An/Bn)=(7n+1)/4n+ 等差数列｛an｝,｛bn｝,An/Bn=(7n+45)/(n+3),求an/bn为整数的n的值 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= 已知等差数列an的通项公式为an=1+2n,令bn=an的平方-1,求bn的前n项和 设bn=(an+1/an)^2求数列bn的前n项和Tn （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/ 设等差数列{an}的前 n项和为Sn,且 Sn=(an+1)^/2(n属于N*)若bn=(-1)nSn,求数列{bn}的 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项和分别为Sn,若Sn/Tn=2n/(3n+1),求lim an/bn