DEPDB(<N current value>, <N rate>, <N periods>)
 Computes depreciation of an item as a percentage of its current value.
 Returns <expN> total depreciation over number of <periods>.

 <rate> is the rate of depreciation per time period as a decimal fraction.
 <periods> is the number of time periods.

 * Depreciation over 6 months of item valued at
 * $10,000 with annual depreciation of 10%
 * Months are represented by <n>/12
 m_deprec = DEPDB( 10000, .10, 6/12 )

 * Depreciation of same item over ten years
 m_deprec = DEPDB( 10000, .10, 10 )


             Placed in the Public Domain by Tom Rettig Assoc.