For equation: 1 = (60 = (ex + cos x) dx a. Calculate the integral using Simpson 3/8. b. Calculate the integral using Romberg with n=3 steps. You will need trapezoid integration up to 8 segments (j=4). c. Calculate the integral using Gauss-Quadrature with 3 points. d. Calculate the error percentage of each part using exact solution. Comment on results, which method provides the best result, which one requires the most calculations and etc. The exact result from analytic solution is 264.63345