in excel if possible thanks

Question 4: 4 Marks You are working on an investment project for which it is assumed that returns will be continuously reinvested into the portfolio. Analysis of the markets and consideration to economic factors suggest the force due to interest return on this project will be 0.5 + 0.1t for the first year, 0.6 + 0.2 x sin(2nt) during the second year and 0.65 + in the final year. The time variable, t, is measured in years from the start of the project. t 1.3 0.5+t Calculate the nominal yearly interest rate for this project. Comment briefly on the accuracy of your result. Question 4: 4 Marks You are working on an investment project for which it is assumed that returns will be continuously reinvested into the portfolio. Analysis of the markets and consideration to economic factors suggest the force due to interest return on this project will be 0.5 + 0.1t for the first year, 0.6 + 0.2 x sin(2nt) during the second year and 0.65 + in the final year. The time variable, t, is measured in years from the start of the project. t 1.3 0.5+t Calculate the nominal yearly interest rate for this project. Comment briefly on the accuracy of your result