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GeomSn: Geometric Series

Description

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..

Usage

GeomSn(a1, q, n)

Value

the sum as numeric value

Arguments

a1

the first element of the sequence

q

the factor of the sequence

n

number of elements to include in the sum

Author

Andri Signorell <andri@signorell.net>

See Also

Examples

Run this code
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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