PLEASE I need help in MATLAB problem

Background and formulation of the problem Root finding is a classic computational mathematical problem, and very often of high interest to engineers. This is especially true when one cannot calculate analytically the roots of a merical algorithm for r Raphson. Let f:CC be continuously differentiable, and a point zn E C to be an initial estimate of the root. The next estimate of the root will be, f(zn) which is known as the Newton-Raphson formula. Usually after enough iterations the algorithm will provide a good approximation of the root of f. Of course, one would need to