等差数列｛an｝,｛bn｝,An/Bn=(7n+45)/(n+3),求an/bn为整数的n的值可能我说的不清楚，An，Bn是分别指两个数列的和，而an，bn是指每个项，看清楚哦

已知数列{an}是等差数列,且bn=an+a(n-1),求证bn也是等差数列 an+1^2-a^2=bn an是等差数列 求证bn是等差数列 数列｛an｝为等差数列,数列｛bn｝满足bn=2an+1+a2n-1,证明｛bn｝为等差数列 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}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 计算等差数列{an}{bn}的前n项和分别为An.Bn,且An/Bn=2n/(n+1)求limn→∞(an/bn) An是等差数列,Bn=0.5的An次方,求证Bn是等比数列 如果数列{an}是等差数列,设bn=(1/2)^an,数列{bn}是等比数列吗? an,bn都是公差不为零的等差数列,lim(an/bn)=3,求limb1+b2+.+bn/na3n 已知{An}为等差数列,Bn=A3n+1,求证数列Bn为等差数列. 已知{an}是等差数列,bn=kan+m(k,m为常数).求证{bn}是等差数列 已知An是等差数列,m是常数,且Bn=mAn,求证Bn是等差数列 已知数列{an},{bn}满足a1=2,2an=1+2an*an+1,设{bn}=an-1求数列{1n}为等差数列急！！！ Bn分别是等差数列[an][bn]的前几项和,且An/Bn=(7n+45)/(n+3),求an/bn【详细过程, 已知数列{an}和{bn}满足关系:bn=(a1+a2+a3+…+an)/n,(n∈N*).若{bn}是等差数列,求证{an}为等差数列 设数列an,bn满足:bn=(a1+a2+a3+a4+...+an)/n,若bn是等差数列,求证an也是等差数列 数列{an}与{bn}满足an=1/n(b1+b2+…+bn)(n∈N).求证:数列{bn}为等差数列的充要条件是数列{an}为等差数列