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Recurrence Relations
easy
0:00.0
If
a
0
=
1
a_0 = 1
a
0
=
1
and
a
n
=
a
n
−
1
+
2
a_n = a_{n-1} + 2
a
n
=
a
n
−
1
+
2
, what is
a
3
a_3
a
3
?
A
3
3
3
B
5
5
5
C
7
7
7
D
9
9
9
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