please solve all steps using python and show code

In this assignment, you must use variables, loops, if statements, your own function definitions and function calls to write the required functions. For now, you may not use any of the powerful functions available in python modules, with two exceptions: you may import functions from the math module and the copy module. You must include reasonable comments in your code. b) Write a function defined as: Nei Secant (icn, x0, x1, maxiter=10, xtol-le-5): Purpose: use the Secant Method to find the root of fen(x), in the neighborhood of x0 and xl. icn: the function for which we want to find the root XU and 1: two x values in the neighborhood of the root Xtol: exit if the xnewest - Xprevious