Summation
A summation is the act of adding a set of numbers, be it natural numbers,
complex numbers, matrices and other complex expressions.
Summations are denoted by the greek capital letter "sigma." ( ∑ ) In some cases,
upper and lower limits are placed on
the top or bottom areas of the summation symbol to signify its boundaries.
You can write summation expressions by inserting the "sigma"
symbol in OpenOffice.org Math.
Working with summation expressions
The following screencasts demonstrate how to work with summation expressions:
- Enter the expression for the sum of a sequence
- Enter a summation expression with a lower and upper limit
- Enter a summation expression with a lower limit
- Enter a summation expression with an upper limit
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