About the symbol Σ
The symbol Σ is used to denote summation. Often, Σ is not used alone, but represented in this manner:
The above means that we are going to sum the series from the first term (where r = 1) to the nth term, and each term takes the formula of f(r).
Examples of summation
Example 1: Evaluate the following:
Solution:
Example 2: Evaluate the following:
Solution:
Commonly used summation formula
Sequences and series, AP& GP, and summation notes
- Sequences and series
- Arithmetic progression
- Geometric Progression
- Using the Graphic calculator (Ti84) for AP & GP Questions
- Summation: Introduction
- Finding summation using the graphic calculator
- Method of difference and summation
All the notes for H2 A Level Math
Go here to find all the notes and resources for H2 A level Math.