Fixed-point iteration for two nonlinear equation-python demo

In this screencast, fixed-point iteration algorithm has been demonstrated in python IDLE. The problem of finding intersection points of circle and a parabola was considered. In an earlier screencast, fixed-point iteration algorithm was developed for the solution of a single variable problem (@.https://youtu.be/O2qWOqsDAKg?si=9iBkK1IYF4nkVniw). A learner is encouraged to observe the similarities in implementations and complete the algorithm for system of nonlinear equations. Programming highlights: 1- Definition of function 2- Error calculation using vector norm function (np.linalg.norm())