3. For the model (1-B)(1-0.2B)X-(1-0.5B)a, find forecasts for one and two steps ahead,and show that a recursive expressions for forecasts three or more steps ahead is given byX, (k) = 1.2X, (k -1) -0.2X,(k-2)

Given: Let Xt∧k=1.2 Xt∧k-1-0.2X∧tk-2 ---(1)

Answered: For the model (1-B)(1-0.2B)X(1-0.5B)a,,…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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For the model (1-B)(1-0.2B)X(1-0.5B)a,, find forecasts for one and two steps ahead, nd show that a recursive expressions for forecasts three or more steps ahead is given by