Use the golden-section search to determine the location, xmax, and maximum, f(xmax), of th...

Use the golden-section search to determine the location, x_max, and maximum, f(x_max), of the following function by hand,

Use initial guesses of x_l = 0.7 and x_u = 1.4 and perform sufficient iterations so that ε_s = 10%. Determine the approximate relative error of your final result.