HINT , 19.6- 12. ) Consider the following inventory model , which is a single period model with known density of demand `alej _ _ for _ _ O And poles...

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HINT , 19.6- 12. ) Consider the following inventory model , which is a single period model withknown density of demand `alej _ _ for _ _ O And poles _ O elsewhere ."There Are twoCosts connected with the model .'The first is the purchase cost , given liv Ily _ I ] ."The secondIs A Cost ? that is incurred once if there is any unsatisfied demand ( independent of the Amountof unsatisfical demand ) .( A ) If I units Are available and Foods Are ordered to bring the inventory level up to " ( ifI _ V), write the expression for the expected loss and describe completely the optimalpolicy .( b) If a fixed cost IT is also incurred whenever an order is placed , describe the optimal policy .