Q3 — Signal Processing

Q3

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The sale quantity for a product at the current period can be forecasted from the sale quantity in the two preceding periods by the following equation.

f(k)=0.6f(k−1)+0.4f(k−2)−5f(k)=0.6f(k−1)+0.4f(k−2)−5

If the sales for the two preceding periods are f(0)=100f(0)=100 and f(1)=110f(1)=110 , what will be the forecasted sale for the current period?