已知数列{an}的前n项和为sn,且a1=1,a(n+1)=Sn/2.当bn=log3/2(3a(n+1))时的问题,已知数列{an}的前n项和为sn,且a1=1,a(n+1)=Sn/2.当bn=log3/2(3a(n+1))时,求证:数列{1/bnb(n+1)}的前n项和Tn=n/1+n
问题描述:
已知数列{an}的前n项和为sn,且a1=1,a(n+1)=Sn/2.当bn=log3/2(3a(n+1))时的问题,
已知数列{an}的前n项和为sn,且a1=1,a(n+1)=Sn/2.
当bn=log3/2(3a(n+1))时,求证:数列{1/bnb(n+1)}的前n项和Tn=n/1+n
答