A-level Mathematics/MEI/C2/Sequences and Series

Sequences and Series - Principles

A sequence is a set of numbers in a given order: ½ ⅓ ⅔ ¼

Arithmetic sequences: $a_n = an + b$

Geometric sequences: $a_n = a r^{n-1}$

Oscillating sequences: $a_n = (-1)^n$

Periodic sequences.