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Recurrence Relations
hard
0:00.0
If
A
(
x
)
=
1
1
−
x
−
2
x
2
A(x) = \frac{1}{1-x-2x^2}
A
(
x
)
=
1
−
x
−
2
x
2
1
, find the value of
a
2
a_2
a
2
.
A
3
3
3
B
1
1
1
C
2
2
2
D
0
0
0
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