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Polinom laglar

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Polinom laglar L operatorining polinomik ifodasidir: ψ(L)=∑_{j=0}^p ψ_j L^j, bunda L y_t = y_{t-1} va ψ_0 odatda 1. AR(p) modelida φ(L)=1-∑_{i=1}^p φ_i L^i; MA(q) modelida θ(L)=∑_{j=0}^q θ_j L^j, θ_0=1. Cheklangan darajali polinom va cheksiz seriyalar ko'rinishida yozish mumkin; koeffitsientlar real yoki kompleks bo'lishi mumkin

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#ildizlar#polinom#statsionarlik
Bobur Allayorov

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Bobur Allayorov

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