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Summation Σ

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:


Example 2: Evaluate the following:


Commonly used summation formula

Here are the commonly used formula for summation, which includes summation or r, summation of r square, summation of r cube, and summation of constant terms.

Sequences and series, AP& GP, and summation notes

All the notes for H2 A Level Math

Go here to find all the notes and resources for H2 A level Math.

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