数列(bn)的前n项和是Tn,且Tn+1/2bn=1,求证数列(bn)是等比数列
数列(bn)的前n项和是Tn,且Tn+1/2bn=1,求证数列(bn)是等比数列
数列{bn}的前n项和是Tn,则Tn+1/2bn=1.求证数列{bn}为等比数列
数列{Bn}前n项和为Tn,且Tn+0.5Bn=1 求Bn为等比数列
已知数列{bn}中,点(bn,Tn)在直线y=-1/2x+1上,Tn是数列{bn}的前n项和,求Tn
已知数列{an}是等差数列,a2=6,a5=18;数列{bn}的前n项和是Tn,且Tn+(1/2)bn=1.
已知数列{an}是等差数列,a2=6,a5=18,数列{bn}的前n项和是Tn,且Tn+(1/2)bn
已知数列{an}是等差数列,a2=6,a5=18,数列{bn}的前n项和是Tn,且Tn+(1/2)*bn
数列bn的前n项和为Tn,6Tn=(3n+1)bn+2,求bn
数列{an}、{bn}分别为正项等比数列,Tn,Rn分别是数列{lgan}{lgbn}的前n项和,且Tn/Rn=n/2n
已知{An}是等差数列,A3=6,A5=18,数列{Bn}前n项和为Tn,且Tn+1/2Bn=1 1、求证:数列{Bn}
已知数列an是等差数列,a2=6,a5=18,数列bn的前n项和是Tn,Tn+1/2bn=1.设cn=an×bn,求证c
已知数列bn满足bn=b^2n,其前n项和为Tn,求(1-bn)/Tn