@CalcMgrExcelDB
Purpose:
Returns the depreciation of an asset for a specified period using the fixed-declining balance method
Syntax:
Java Class: com.hyperion.calcmgr.common.excel.cdf.ExcelFinancialFunctions.DB(double,double,double,double,double)
CDF Spec: @CalcMgrExcelDB((cost, salvage, life, period, month)