数列{an}的前n项和为Sn=(1/2)n²-2n(n∈N*),数列{bn}满足bn=an+1/an(n∈N*
数列{an}的前n项的和Sn=n2-10n(n属于N*),数列{bn}满足bn=(an+1)/an(n属于N*),(1)
数列{an}的前n项的和Sn=2an-1(n∈N*),数列{bn}满足:b1=3,bn+1=an+bn(n∈N*).
已知数列{an}的前n项和Sn=-an-(1/2)^(n-1)+2(n为正整数).令bn=2^n*an,求证数列{bn}
已知数列{an}的前n项和为Sn,且Sn=2n^2+n,n∈N*,数列{bn}满足an=4log2(bn),n∈N*
高三数列难题已知数列{an}的前n项和为Sn,且满足Sn+n=2an(n∈N*).{an}通项公式为2^n-1若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
数列an的前n项和为Sn=2^n-1,设bn满足bn=an+1/an,判断并证明bn 的单调性
数列an的前n项和Sn满足Sn=n^2-8n+1,若bn=|an|,求数列{bn}的通项公式
数列an,满足Sn=n^2+2n+1,设bn=an*2^n,求bn的前n项和Tn
3.设数列{an}的前n项和Sn=2an-4(n∈N+),数列{bn}满足:bn+1=an+2bn,且b1=2.求{bn
设数列an的前n项和为sn,sn=n^2+n,数列bn的通项公式bn=x^(n-1)
已知数列{an}的前n项和Sn=3×(3/2)^(n-1)-1,数列{bn}满足bn=a(n+1)/log3/2(an+