A) if f(2) and f(2) both are analytic in a domain d, then f(2) is a constant function in d. ) if f(z) is analytic andf(z) = 0 in a domain d, then f(z) is a cons

a) If f(2) and f(2) both are analytic in a domain D, then f(2) is a constant function in D. ) If f(z) is analytic andf(z) = 0 in a domain D, then f(z) is a constant function in D. )If f(z) is analytic in a domain D and u +y 0 in D, then f(z) is constant in D.