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Unformatted text preview: 9.1 Finding the nth term and Summation Notation
Monday, October 31, 2011
6:51 AM Notebook Quiz/Check on next block day.
End of Grading Period: Nov. 4 Agenda:
1. Turn in HW#32
2. Whiteboard Work
3. Lesson: 9.1 Finding the nth term and Summation Notation
Simplify the ratio of factorials _______________________
Lesson: 9.1 Finding the nth term and Summation Notation
Goal: Find the nth term of a sequence and use summation notation
Find the nth term
Write an expression for the apparent nth term ( ) of each sequence.
common ratios squares patterns with fractions alternating signs Ch_9 Page 1 Summation Notation
Definition of Summation Notation index of summation (commonly , but can be any variable)
upper limit of summation (index of where you end)
lower limit of summation (index where you begin, commonly 1)
Find the sum
Find all of the terms and add them up! Write in Summation Notation
• what is changing? How?
• What is the lower limit? (first index)
• What is the upper limit? (last index) Ch_9 Page 2 Ch_9 Page 3 ...
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- Spring '11