1la: Determine the derivative of each function using df f ( z + Az) - f(z) lim dz Az->0 Az You should be able to determine whether the function has the same derivative for every z or whether it may be different. Use the functions f(z) = 22 + 1 and f(z) = z*. b: Use the Cauchy-Riemann conditions to verify if the functions are analytic or not. You will certainly have to determine U(x, y) and V(x, y) before you can do this