Arithmetic Sequences
An arithmetic sequence is a sequence in which the same value, called the common difference, is added to each term to obtain the next term. For example, the sequence \(1,5,9,\ldots\) has common difference \(4\) . There are formulae in the formula booklet to help with this topic, but it is useful to understand how they are constructed and when to use them. Exam questions often connect arithmetic sequences and series...