Элементы дискретной математики. Часть I - 81 стр.

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a
n+2
p
1
a
n+1
p
2
a
n
=0,a
0
= x
0
,a
1
= x
1
. (11)
A(x)=
n=0
a
n
x
n
{a
n
}
n=0,1,...
x
n+2
a
n+2
x
n+2
p
1
x(a
n+1
x
n+1
) p
2
x
2
(a
n
x
n
)=0.
n :
n=0
a
n+2
x
n+2
p
1
x(
n=0
a
n+1
x
n+1
) p
2
x
2
n=0
a
n
x
n
=0.
n=0
a
n+2
x
n+2
= A(x) (a
0
+ a
1
x),
n=0
a
n+1
x
n+1
= A(x) a
0
,
A(x) (a
0
+ a
1
x) p
1
x(A(x) a
0
) p
2
x
2
A(x)=0.
A(x)(1 p
1
x p
2
x
2
)=a
0
+ a
1
x p
1
a
0
x
A(x)=
a
0
+(a
1
p
1
a
0
)x
1 p
1
x p
2
x
2
.
a
n+2
a
n+1
a
n
=0,a
0
=0,a
1
=1,
A(x)=
0+(1 1 · 0)x
1 x x
2
=
x
1 x x
2
.
A(x)=
α
1
α
1
α
2
·
1
1 α
1
x
α
2
α
1
α
2
·
1
1 α
2
x
,
α
1
=
1
5
2
2
=
1+
5
2
.