Who can help me to write code by Octave?

2.3.1 The Secant Method To avoid the issue with the computation of the derivative in the Newton-Raphson Method, an alternative method called the Secant Method can be used. In this method, we simply approximate f'(xn-1) with f(xn-1) - f(xn-2) 2n-1 Xn-2 which leads to the iteration equation f(In-1)(xn-1 Xn-2) In = {n-1- f(In-1) - f(xn-2) For this algorithm we will need two initial values. Further, we will not need to differentiate so we won't use the variable dfh and we won't need to type syms x in the m-file