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Calculates the Net Present Value of an investment, based on a supplied discount rate, and a series of deposits and withdrawals.
NPV (Rate as Double, Values() as Double)
Double
Rate defines the interest rate per period.
Values() is an array that represent deposits (positive values) or withdrawals (negative values).
REM ***** BASIC *****
Option VBASupport 1
Sub ExampleNPV
 Dim r As Double
 Dim pValues(5) as Double
 pValues(0) = 100
 pValues(1) = 100
 pValues(2) = 100
 pValues(3) = -300
 pValues(4) = 100
 pValues(5) = 100
 r = 0.06
 p = NPV( r, pValues)
 Print p ' returns 174,894967305331
End Sub