Изменения
→Пример 1
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<tex> G(z)=\dfrac{8+4z}{1-z-z^2+z^3}=\sum_{n=0}^\infty (7(n+1)-n+(-1)^n)z^n=\sum_{n=0}^\infty (6n+7+(-1)^n)z^n</tex>
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Или
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<tex>
[z^n]G(z) = 6n+7+(-1)^n, \quad n \geqslant 0.
</tex>
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