设数列{an},{bn}满足a1=1/2,2na(n+1)=(n+1)an,且{bn}=ln(1+an)+1/2an^2
设数列{An}和{bn}满足A1=1/2,2nA(n+1)=(n+1)An,且Bn=ln(1+An)+1/2(An)2,
设数列{an},{bn}满足a1=1/2,2na(n+1)=(n+1)an,且{bn}=ln(1+an)+1/2an^2
已知数列{an}满足a1=1,a2=2,an+2=(an+an+1)/2,n∈N*.令bn=an+1-an,证明{bn}
an=2*3^n-1 若数列bn满足bn=an+(-1)^n*ln(an),求数列bn前n项和Sn
已知数列{an}满足:an+an+1=2an+2,且a1=1,a2=2,n∈N* 一:设bn=an+1-an ,证明bn
在数列{an},{bn}中,a1=2,b1=4且an,bn,an+1成等差数列,bn,an+1,bn+1成等比数列(n∈
在数列{an},{bn}中,a1=2,b1=4,且an,bn,an+1成等差数列,bn,an+1,bn+1成等比数列(n
在数列{an}中,a1=1,an+1=(1+1/n)an+(n+1)/(2^n) (1) 设bn=an/n,求数列{bn
在数列{an}中,a1=1,an+1=[(n+1)/n]*an+2(n+1),设bn=an/n,(1)证明数列{bn}是
已知数列{an}满足a1=4,an=4-4/an-1(n>=2),设bn=1/an-2(1)求证{bn}是等差数列;(2
已知数列{an}满足a1=2,an=2an-1+2(n∈N*,且n≥2)若数列{bn}满足bn=log2(an+2)设T
数列{an}中,a1=1,且a(n+1)=2an+1.设bn=an+1