Sigma Notation (Chapter 4.5: Sequences & Series)

Edexcel Year 2 Pure Mathematics (2017 Specification)
An introduction to sigma notation, what it represents, and how we can calculate the sum of a series presented using sigma notation.
Sigma notation is ubiquitous in higher-level mathematics and adds to the abstract nature of certain key ideas such as Taylor/Maclaurin series or the binomial series.

00:00 Introduction
00:27 Solution to Warm-Up question 1
04:01 Solution to Warm-Up question 2
08:08 Solution to Warm-Up question 3
13:58 Solution to Warm-Up question 4
16:36 Introductory Example
21:16 Useful series
22:25 Worked Example 1
29:18 Worked Example 2
44:20 Worked Example 3