Functions that takes a set of data points and finds a function to interpolate them. For both functions, you input a csv file that contains the data points as two rows, with the x-values making up the first row and the y-values making up the second row. The functions will write the interpolating polynomial as a string to a file of your choosing. It will also return the polynomial as a lambda so you can easily plug numbers into it.

delimiter = ','

Interpolation Methods: Lagrangian Interpolation, Hermite Interpolation