breannabailey9682 breannabailey9682 23-05-2023 Mathematics contestada Let U § C be a region containing D(0; 1) and let f be a meromorphic function on U, which has no zeros and no poles on dD (0;1). If f has a zero at 0 and if Ref (z) > 0 for every ZE AD (0;1), show that f has a pole in D(0; 1).