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Calculates the sum-of-years digits depriciation for anasset based on its cost, salvage value, anticipated life and aparticular period.
Formula for sum-of-years digits depriciation is:
Depriciation expense = ( cost - salvage value ) * (life-period+1) * 2 / life * (life + 1)
cost = cost of an asset when acquired (market value) salvage_value = amount you get when asset sold at the end of life life = anticipated life of an asset period = period for which we need the expense@SEEALSO=SLN