9.1 Finding the nth term and Summation Notation

9.1 Finding the nth term and Summation Notation - 9.1...

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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 _______________________ Whiteboard Work 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 differences common ratios squares patterns with fractions alternating signs Ch_9 Page 1 Summation Notation DOD 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) _______________________ Examples Find the sum Find all of the terms and add them up! Write in Summation Notation Ask yourself… • 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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