1. Summation & Sigma Notation
Section 2.2.1
Summation & Sigma Notation

2. Sigma Notation Σ is the Greek letter sigma
Sigma represents the capital “S” in English.

3. ( values for k must be whole numbers or non- negative integers)
Last number plugged in.
Expanded form
Sum
Formula
Index of summation.

4. Examples
Write in expanded form and evaluate:

5. Examples
Write in expanded form and evaluate:

6. Definition:
Sigma Notation
Upper Bound
i th Term
Index
Lower Bound

7. Adding Rational Expressions
Relative Prime Fractions: AKA Butterfly Method

8. Adding Rational Expressions:

9. Fractions with Common Factors:

10. Fractions with Common Factors:

11. Assignment
Pg 72  #2-31 TO 2-45