d) Write a function defined as: def GaussElim (Aaug) : Purpose of GaussElim (Aaug) : use the Gauss Elimination with Back Substitution method to solve the set of linear equations expressed in matrix form as Ax=b. Both A and b are contained in the function argument - Aaug Aaug: an augmented matrix containing [A | b ) having N rows and N+1 columns, where N is the number of equations in the set. return value x - an array of size N, containing the solution to Ax=b Notes: Do NOT use partial pivoting in this program. (I want everyone to get the exact same answer, and I don't want you working quite that hard). Write and call a main() function that uses your GaussElin function to calculate and print the solution to the same sets of linear equations given in part c)