(Complex Varibles) Suppose that f (z_0) = g(z_0) = 0 and that f'(z_0) and g'(z_0) exist, where g'(z_… Show more (Complex Varibles) Suppose that f (z_0) = g(z_0) = 0 and that f'(z_0) and g'(z_0) exist, where g'(z_0) 0. Use definition (1), Sec. 19, of derivative to show that • Show less