NCERT Question

Asked by RACHIT_MAHAAN | 7th Sep, 2010, 03:15: PM

Expert Answer:

For a G.P, Sn=a1-rn1-rsum of (n+1) terms to (2n) terms = S2n-Sn S2n-Sn=a1-r2n1-r-a1-rn1-r                =arn-r2n1-r=arn1-rn1-r=rna1-rn1-r=rn.SnHence, SnS2n-Sn=1rn">

Answered by  | 9th Sep, 2010, 07:06: AM

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