最好看图.【设数列｛an｝的前n项和为Sn.已知a1=a ,an+1=Sn+3n ,n∈N* .(1)\x05设bn=S

设数列{an}的前n项和为Sn,已知a1=a,an+1=Sn+3^n,n∈N+.设bn=Sn+3n,求数列{bn}的通项 设数列{an}的前n项和为sn,已知a1=a,an+1=sn+3^n,n∈N* (1)设bn=sn-3^n,求数列{bn 设数列{an}的前n项和为sn.已知a1=a,an+1=sn-3n,n∈N*,设bn=sn-3n,且bn≠0 设数列{An}的前n项和为Sn,已知A1=a,A(n+1)=Sn+3∧n,n是正整数,设Bn=Sn-3∧n,求数列{Bn 已知数列{an}的前n项和为Sn,且a1=2,3Sn=5an-A(n-1)+3S(n-1)(n≥2,n属于N*)设bn= 设数列{an}的前n项和为Sn已知a1=a,a(n+1）=Sn+【3的n次方】n∈正整数设bn=Sn-[3的n次方]求{ thanksss!设数列{an}的前n项和为sn,已知a1=a,an+1=sn+3^n,n∈N* (1)设bn=sn-3 设数列{An}的前n项的和为Sn已知A1=a A(n+1)=Sn+3^n (1)设Bn=Sn-3^n 求数列{Bn}的通 设数列An的前n项和为Sn,已知a1=a,an+1=Sn+3n设Bn=Sn-3n次方,求数列Bn的通项公式 设数列{an}的前n项和为Sn．已知a1=a，an+1=Sn+3n，n∈N*．由 数列的.设数列{an}的前n项和为Sn,已知a1=a,数列第（n+1）项=Sn+3^n,n属于正整数1.设bn=Sn-3 问两道数列的题,一.设数列{An}的前n项和为Sn,已知a1=a,a（n+1）=Sn+3^n,n为正数（1）设Bn=Sn