Define summation notation and give an example involving a simple series.

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Summation notation, also known as sigma notation, is a mathematical notation used to represent the sum of a series of terms. It is denoted by the Greek letter sigma (Σ) followed by an expression inside the sigma symbol.

For example, consider the series 1 + 2 + 3 + 4 + 5. This series can be represented using summation notation as:

$$ \sum_{i=1}^{5} i $$

Here, the expression inside the sigma symbol is $$ i $$, and the limits of summation are from 1 to 5. This notation indicates that we are summing the values of $$ i $$ from 1 to 5.
Summation notation, or sigma notation, uses the Greek letter sigma (Σ) to represent the sum of a series. For instance, the series 1 + 2 + 3 + 4 + 5 can be written as $$ \sum_{i=1}^{5} i $$.

Define summation notation and give an example involving a simple series.

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