The Martian Corporation, a space vehicle development company, is starting a new division that will develop the next generation launch missile engine configuration. Use a hand application of the MIRR method to determine the EROR for the estimated net cash flows (in $1000 units) of $−50,000 in year 0, $+15,000 in years 1 through 6, and $ 8000 in year 7. Assume a borrowing rate of 12% and an investment rate of 25% per year. Also, write the MIRR function to obtain i′.