Calculates the present value.
- a future value fv
- an interest rate compounded once per period - rate - enter as a decimal number, not percents
- total number of periods - nper
- a fixed payment amount - pmt
- when the fixed payment amount is paid - when - enter 0 when at the end of each period, enter 1 if at the beginning of each period
Negative numbers represents cash flow out
. See Wikipedia
and other internet resources for more information.