Problem 2 Implement the function gauss_solve(A, b) that solves the system Ax = b . The input A is of the type Matrix and b is of the type Vec . . If the system has a unique solution, it returns the solution as a Vec object. . If the system has no solution, it returns None . . If the system has infinitely many solutions, it returns the number of free variables ( int ) in the solution. def gauss_solve(A, b) : #todo pass