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5 Cards in this Set

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  • Back

An= a1 + (n - 1) ( d )

Arithmetic sequence

Sn = n/2 (a1 + an)

Arithmetic finite

An = A n-1 + d

Recursive formula

Sn = A1 ( 1 - r^n) / 1 - r

Geometric finite sequence

An = a1 ( r ) ^ n - 1

Geometric sequence