Tuesday, May 1, 2007

sequences quiz

1. I still have some problems in findind explicit definitions. How do I find explicit definitions for geometric sequences with a few terms?. The formula is Tn = t1 x r to the power of (n-1). That and the fibonnaci sequence formulas still are confusing.

2. I think probably I will have a lot of problems in the quiz with the explicit definition in arithmetic sequences. Is m in the formula the difference or the first term? Please answer me this question.

3. 21, 13, 5, -3...
state if this given sequence is arithmetic, geometric, or neither.
Find a formula for tn, for the nth term of each sequence.
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1 comment:

diegoc said...

The given sequence is an arithmetic sequence because the difference between each term is a constant which is -8.

-21=-8+b - (-8) b= -13

t(n)= -8(n)- 13

May 1, 2007 at 6:35 PM

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