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Return period is often used by investors as an index of investment effectiveness taking into account the time value of money. In order to determine this parameter the equation NPV=0 needs to be solved as a function of 't'. As it is shown it is an exponential equation for which no solution in an analytical form can be obtained and only iterative methods can be used: secant, tangent or bisection methods...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.