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A geometric sequence is a sequence, such that each term is given by a multiple of q of the previous one. A geometric series consists out of the sum of all former values of a geometric sequence..

GeomSn(a1, q, n)

the sum as numeric value

the first element of the sequence

the factor of the sequence

number of elements to include in the sum

Andri Signorell <andri@signorell.net>

sum

GeomSn(a1=3, q=2, n=5) # calculates the sum of the first 5 elements of the sequence (gseq <- 3 * (2^(0:5))) sum(gseq) GeomSn(a1=3, q=2, n=0:5)

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