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# Ch2 Les1

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Keynote for Chapter 2, Lesson 1 - Jacobs Experience

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### Ch2 Les1

1. 1. Chapter 2 NUMBER SEQUENCES Lesson 1 - Arithmetic Sequences
2. 2. 1 2 3 4 5 6 7 8 9 10 11 ...
3. 3. A number sequence is an arrangement of numbers in which each successive number follows the last according to a uniform rule.
4. 4. Other definitions.... The numbers in the sequence are called “terms.”
5. 5. When a parachutist jumps from an airplane, the distances in feet traveled during the first few seconds are 16 48 80 112 144 ...
6. 6. 16 48 80 112 144 ... This sequence is similar to the sequence of counting numbers in that each successive term can be found by adding the same number to the preceding term.
7. 7. 16 48 80 112 144 ... + 32 + 32 + 32 + 32
8. 8. Arithmetic sequences A number sequence in which each successive term may be found by adding the same number is an arithmetic sequence.
9. 9. The common difference The number added to each term of an arithmetic sequence to form the next term is also called the difference between each pair of successive terms. It is called the common difference of the sequence.
10. 10. Too Complicated?? Try some.
11. 11. Common Difference? 3! 2 5 8 11 14
12. 12. Common Difference? -2 11 9 7 5 3 (Remember it’s going down!)