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Recursion
easy
0:00.0
Find
a
1
a_1
a
1
if
a
n
=
3
a
n
−
1
a_n = 3 a_{n-1}
a
n
=
3
a
n
−
1
and
a
2
=
9
a_2 = 9
a
2
=
9
.
A
1
B
3
C
2
D
0
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