已知数列{an}满足a1=2a,an=2a-a²/2n-1(n≥2).其中a是不为0的常数已知数列｛an｝满足a1=2,an=2a-a²/2n-1(n≥2).其中a是不为0的常数,令bn=1/an-a（1）求证：数列｛bn｝是等差数列；（2）求数列｛an｝

已知数列{an}满足an+1=2an+3.5^n,a1=6.求an 已知数列an满足条件a1=-2 a（n+1）=2an/(1-an) 则an= 已知数列an满足a1=1,a(n+1)=an/(3an+2),则an=? 已知数列满足a1=1/2,an+1=2an/(an+1),求a1,a2已知数列满足a1=1/2,a(n+1)=2an/(an+1),求a1,a2;证明0 数列题,求通项已知数列｛An}满足A=2An/(1-An),A1=2,求数列｛An}的通项公式 已知数列｛An｝满足a1=1,a（n+1）=2an+1 求证数列{an+1}是等比数列 求数列｛an｝通式 已知数列{an}满足a1=2,a(n+1)-an=a(n+1）*an,则a31=? 已知数列{an}满足a1=1/2,sn=n^2an,求通项an 已知数列满足a1=1 ,an+1+2an=2 求an 已知数列an满足条件a1=-2 an+1=2an+1则a5 已知数列{an},满足a1=1/2,Sn=n²×an,求an 已知数列an满足a1=1/2 sn=n平方×an 求an 已知数列An满足 A1=1/2 Sn=N²An 求An 已知数列{an}满足a1=1,an+1·an=2^n 则s2012 已知数列an满足an+1=nan,a1=2,求an通项 已知数列{an}满足An+1=2^nAn,且A1=1,则通项an 已知数列an满足a1=1 Sn=2an+n 求an 已知数列｛an｝满足a(n+1)=an+3n+2,且a1=2,求an=?