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Mathematics
Problem
For the sequence
2
,
1
2
,
−
1
,
−
5
2
,
…
2, \dfrac{1}{2}, -1, -\dfrac{5}{2}, \ldots
2
,
2
1
,
−
1
,
−
2
5
,
…
, find the common difference. a)
3
2
\dfrac{3}{2}
2
3
b)
−
1
-1
−
1
c)
−
2
-2
−
2
d)
−
3
2
-\dfrac{3}{2}
−
2
3
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