this is using matlab. the fofx function is

function [y] = fofx(x)

y=x^3+2*x^2-111*x+108

end

1. Create a function file that uses the Newton-Raphson method to solve for the root of the equation from the last assignment. Use the function fofx (again from last assignment) to calculate its value at the needed points. The inputs should be the maximum allowable relative error and the initial guess