The sensitivities approach [2] consists of 1st calculating solution sensitivities called the Greeks as a result of prevalent practice of representing the sensitivities employing Greek letters.S? d?ng ph??ng pháp này, thu nh?p ch? ???c ghi nh?n khi ti?n m?t ???c nh?n th?c s?, và chi phí ch? ???c ghi nh?n khi ti?n m?t ???c thanh toán th?c s?.Gro