SOLUTION: The first term of a sequence are 1, -5/2, 2, and -3/2. determine whether the sequence is arithmetic, geometric, or neither. If the sequence is arithmetic or geometric, find the fif

Question 442492: The first term of a sequence are 1, -5/2, 2, and -3/2. determine whether the sequence is arithmetic, geometric, or neither. If the sequence is arithmetic or geometric, find the fifth term
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The first term of a sequence are 1, -5/2, 2, and -3/2. determine whether the sequence is arithmetic, geometric, or neither. If the sequence is arithmetic or geometric, find the fifth term
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common difference??:
-5/2-1 = -3.5
2--5/2 = 3.5
no common diff. so not arithmetic.
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common ratio??
(-5/2)/1 = -5/2
2/(-5/2) = -4/5
no common ratio, so not geometric.
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Ans: Neither
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Cheers,
Stan H.
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