Write the first three terms of the sequence an= (-1)n-1 (5)n+1
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(i) We have, a
n
=3n+2
Putting n=1,2 and 3, we get
a
1
=3×1+2=3+2=5
a
2
=3×2+2=6+2=8
a
3
=3×3+2=9+2=11
Thus, the required first three terms of the
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