数列an前n项和Sn,满足a1=tSn-(2t+1)S(n-1)=t,t>0,n>=2
设数列{An}的首项A1=1,前n项和Sn满足关系式:3tSn-(2t+3)Sn-1=3t(t>0,n为自然数n>=2)
设数列{an}的首项a1=1,前n项和Sn满足关系:3tSn-(2t+3)Sn-1=3t(t>0,n=2,3,4,5,)
数列{an}的首项a1=1,前n项和Sn满足关系:3tSn-(2t+3)Sn-1=3t(t>0,n=2,3,4,5,).
设数列{an}的首项a1=1,前n项和Sn满足关系式.3tSn-(2t+3)Sn-1=3t(其中t>0,n=2,3,4,
数列an的前n项和为Sn,a1=t,2a(n+1)=-3Sn+4 求a2,a3 t为何值an等比
数列{an}的前n项和记为Sn,a1=t,点(Sn,an+1)在直线Y=2X+1上,n∈N*
数列{an}的前n项和记为Sn,a1=t,an+1=2Sn+1(n∈N*).
1:在数列{an}中,a1=1,当n>=2时,其前n项和sn满足an+2sn*s(n-1)=0
已知数列an的前n项和为Sn,且满足an+2Sn·S(n-1)=0(n≥2),a1=1.5
已知数列an满足前n项和Sn=n平方+1.数列bn满足bn=2\an+1,且前n项和为Tn,设Cn=T的2n+1个数—T
已知数列{an}的前n项和满足a1=1/2,an=-Sn*S(n-1),(n大于或等于2),求an,Sn
数列{an}满足a1=1/6,前n项和Sn=n(1/2)(n+1)an