If T denotes the number of observations,which of the following equations represents the one-step-ahead forecast for the model 
?
Definitions:
Outflow
The movement of money out of a business or financial account, often associated with expenses or investments.
Payback Period
The length of time that it takes for a project to fully recover its initial cost out of the net cash inflows that it generates.
Working Capital
The amount of a company's current assets minus its current liabilities, indicating the short-term financial health and operational efficiency of a business.
Salvage Value
The projected value of an asset when it reaches the end of its operational life.
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