1. 12.5 – Sigma Notation

2. Quick Notes about the test All formulas will be given to you Mainly a 1 day test – Wed, 3/9 The Ratio Test will be on it: Just 1 question We will take that one question on Tuesday during the last 15 minutes of class.

3. Vocabulary maximum value of n starting value of n expression for general term Sigma – “take the sum of…” Read: “the summation from n = 1 to k of a n ”

4. Write the expression in expanded form and then find the sum. = 80 + 242 + 728 + 2186 = 3236

5. Write the expression in expanded form and then find the sum. = -5 + -3 + -1 + 1 = -8

6. Express each series using sigma notation. 1.-8 + 4 – 2 + 1 2.6 + 9 + 12 + …+ 33

7. Exit Slip Rip a piece of paper in half. This must be completed by yourself. Turn it over when you are finished. You have 5 minutes. You may use your notes.

8. Write the following series in sigma notation. 1.3 + 6 + 12 + 24 + 48 2.10 + 8 + 6 + … + -4