数列{an}是公差为1的等差数列.数列{bn}满足b1=1,bn=3an+2
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
对于数列{an},取bn=an+1-an,{bn}是公差为6的等差数列,试用a1,b1和n表示an
数列an的前n项和为Sn,Sn=4an-3,①证明an是等比数列②数列bn满足b1=2,bn+1=an+bn.求数列bn
【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.
已知数列{an},如果数列{bn}满足b1=a1,bn=an+a(n-1)则称数列{bn}是数列{an}的生成数列
已知数列{an}是等差数列,且a1=1,公差为2,数列{bn}为等比数列且b1=a1,b2(a2-a1)=b1
已知数列{an}是等差数列,a1=1,公差为2,又已知数列{bn}为等比数列,且b1=a1,b2(a2-a1)=b1,求
设数列{an}是首项为3,公差为d的等差数列,又数列{bn}是由bn=an+an+1所决定的数列,那么数列{bn}前n项