数列{an}是公差为1的等差数列,数列{bn}满足,b=1,bn=3an+2 (1)求证{bn}是等差数列,(2)求 {

已知{an}是首项为1,公差为1的等差数列,若数列{bn}满足b1=1,bn+1=bn+2^an 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 已知数列an满足a1=4 an=4-4/an-1(n大于等于2) 求证bn是等差数列 求数列an的通项公式 已知等比数列{bn}是公比为q与数列{an}满足bn=3^an,(1)证明数列{an}是等差数列 (2)若b8=3,且数 【紧急--高一数学】已知数列{an}是首项a1=a,公差为2的等差数列;数列{bn}满足2bn=(n+1)an （高二数学）已知数列{an}是首项a1=a,公差为2的等差数列;数列{bn}满足2bn=(n+1)an 29（14）：已知数列{an}是首项a1=m,公差为2的等差数列；数列{bn}满足2bn=（n+1）an． 已知数列{an}是首项a1=a,公差为2的等差数列,数列{bn}满足2bn=（n+1）an 1.已知数列｛an｝是首项a1=a,公差为2的等差数列;数列｛bn｝满足2bn=(n+1)an. {an}是首相为1,公差为2的等差数列,bn=1/ana(n+1)求数列{bn}的前n项和 在数列｛an｝中,a1=1,an+1=1-1/(4an),bn=2/((2an)-1).求证数列｛bn}是等差数列,并求 已知数列{an}是等差数列,且bn=3an+1 1.求证:数列{bn}是等差数列 2.若a1=2,