Logarithmic rate of return
In finance, return is a profit on an investment. It comprises any change in value, and interest or dividends or other such cash flows which the investor receives from the investment. Rate of return is a profit on an investment over a period of time.
The force of interest, or more generally the logarithmic or continuously compounded return is a function of time, which is the rate of change with time of the natural logarithm of the accumulation function.
|rlog||Logarithmic rate of return (dimensionless)|
|Vf||Final value, including dividends and interest (dimensionless)|
|Vi||Initial value (dimensionless)|
|t||Time length (period) (dimensionless)|