1. Section 2.2.1 Summation & Sigma Notation

2. Sigma Notation  is the Greek letter “sigma” “Sigma” represents the capital “S”

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

4. Expanded formSum ( values for k must be whole numbers or non- negative integers)

5. Examples Write in expanded form and evaluate:

6. Examples Write in expanded form and evaluate:

7. Examples Write the sum in Sigma notation:

8. Notation: Upper Bound Lower Bound Index k th Term – (formula) Sigma Notation

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

10. Adding Rational Expressions:

11. Fractions with Common Factors:

13. Assignment Pg 72 #2-31 TO 2-45