(1)√n^2+1=n+1
Sn=√n/2
Sn^2=n/4
(2)(S1)^2+(S2)^2+(S3)^2+......+(S10)^2
=(1+2+...+10)/4
=10*11/(2*4)
=55/4 希望能帮到你
(√n)^2+1=n^2+1,Sn=√n/2 设(S1)2+……+(S10)2=T=1/2+2/2+3/2+…+10/2=55/2 亲,望采纳哦!
(S1)^2+(S2)^2+(S3)^2+......+(S10)^2
=(1+2+...+10)/4
=10*11/(2*4)
=55/4