In mathematics, summation (capital Greek sigma symbol: Σ) is the addition of a sequence of numbers; the result is their sum or total.''
Questions (20 min) start time:
1. Consider how to calculate
2. Write out all the numbers that need to be added:
3. Show how this sum can be calculated in terms of a smaller summation.
4. Write an expression similar to #11b showing how any summation of n integers can be calculated in terms of a smaller summation.
5. What is the base case of the summation? (Write the complete formula, not just the value.)
