³ . -

г 2009
70
,
ʲ Ҳ ֲ ' ˲Ͳ ֲ в ˲̲ Բֲ
' $ z^nw^{(n)}+ \sum_{j=0}^{n-1}(a_{n-j}^{(j)}z^{j+1}+a_{n-j+1}^{(j)}z^{j})w^{(j)}=0$.
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