==RRI(nper,pv,fv)
=RRI(5, 1000, 1500)
In this example, the RRI function is used to calculate the equivalent interest rate for an investment that starts with a present value of $1,000, grows to a future value of $1,500 over 5 periods (e.g., years). The formula returns the equivalent interest rate for each period, which is approximately 0.08447 or 8.447%
=RRI(10, 200, 400)
In this example, the RRI function is used to calculate the equivalent interest rate for an investment that starts with a present value of $200, grows to a future value of $400 over 10 periods (e.g., years). The formula returns the equivalent interest rate for each period, which is approximately 0.07177 or 7.177%.
The RRI function is a useful tool for calculating the equivalent interest rate for an investment over a given time period, based on the present and future values of the investment.