Write a Python code divdiff which takes+1 points X-{ro xi,..., ^n) as input and which returns a list of list containing all related divided differences (see Lecture Notes Slide 2.13). Furthermore, test this code with fcos, 3 and X = l inspace(0,2 . T, n + 1). Plot the interpolation polynomials interpolating 1,2,3,4 points