# Sequences & Series

- Author:
- Megan Haywood, pirsquared

- Topic:
- Arithmetic

## Arithmetic Sequences and Series - Key Facts

- An arithmetic sequence is one which begins with a
**first term**() and where each term is separated by a **common difference**() - eg. . - A series is the
**sum**of the terms of a sequence - eg.. - The nth term of an arithmetic sequence is given by
The total of the first n terms of an arithmetic series is given by

## Arithmetic Sequences - Test Yourself

## Geometric Sequences and Series - Key Facts

- An geometric sequence is one which begins with a
**first term**() and where each term is separated by a **common ratio**() - eg. . - The nth term of an geometric sequence is given by
The total of the first n terms of an geometric series is given by The **sum to infinity**of a convergent geometric series is given by

## Geometric Sequences - Test Yourself

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