bn=3/(36n^2-24n-5) Tn是数列bn的N项和,求使得T
bn=3/(36n^2-24n-5) Tn是数列bn的N项和,求使得T
设bn=3/(anan+1),an=6n-5,tn是数列{bn}的前n项和,求使得Tn
设bn=3/(anan+1),an=2n-51,tn是数列{bn}的前n项和,求使得Tn
数列bn的前n项和为Tn,6Tn=(3n+1)bn+2,求bn
已知数列bn=n·3³,求{bn}的前n项和Tn
an=3*2^(n-1),设bn=n/an求数列bn的前n项和Tn
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
bn=3/4n^2-2n T为数列bn前N项和,使得Tn
已知数列bn=K^(2n-1)+2n,求数列{bn}的前n项和Tn.
已知数列bn满足bn=b^2n,其前n项和为Tn,求(1-bn)/Tn
设bn=(an+1/an)^2求数列bn的前n项和Tn
已知数列an的前n项和为sn=2n^2+5n+1,数列bn的前n项和tn满足Tn=(3/2)bn-3/2 求数列an的通