Char. Limit
Feb15-11, 10:38 PM
1. The problem statement, all variables and given/known data
So I was helping my roommate with his homework, and it has the following problem:
Fill in the blanks so that
___, 8, ___, ___, 27, ___, ...
is
a. an arithmetic sequence.
b. a geometric sequence.
c. a sequence that is neither arithmetic nor geometric, for which you are able to write a general term.
2. Relevant equations
3. The attempt at a solution
We tried a Fibonnaci-type sequence, but that really didn't work. And we don't know any other types of sequences. Should I try some sort of quadratic relationship?
So I was helping my roommate with his homework, and it has the following problem:
Fill in the blanks so that
___, 8, ___, ___, 27, ___, ...
is
a. an arithmetic sequence.
b. a geometric sequence.
c. a sequence that is neither arithmetic nor geometric, for which you are able to write a general term.
2. Relevant equations
3. The attempt at a solution
We tried a Fibonnaci-type sequence, but that really didn't work. And we don't know any other types of sequences. Should I try some sort of quadratic relationship?