1. Sullivan Algebra and Trigonometry: Section 13.1
Objectives of this Section
Write the First Several Terms of a Sequence
Write the Terms of a Sequence Defined by a Recursive Formula
Use Summation Notation
Find the Sum of a Sequence

2. A sequence is a function whose domain is the set of positive integers.

3. If n > 0 is an integer, the factorial symbol n
If n > 0 is an integer, the factorial symbol n! is defined as follows:
Evaluate: 6!

4. Sequences in which the first (or first few) terms are assigned values and the nth term is defined by a formula that involves one (or more) terms preceding it is a recursively defined sequence.

6. Summation Notation