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Recurrence Relations
hard
0:00.0
Given
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
1
B
2
C
3
D
4
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