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and both exist. Using and Suppose that f(zo) = g(zo) = 0 and that f'(zo) #0 g(20) # 0 and Theorem 2 of Section 16, ie, if lim 2->20 then show that f'(20) = lim 2->20 Do you recognize this result? f(2)= wo lim F(2) Wo #0 ->20 f(z) lim :->0 F (2) = f(z) = lim -> %0 g(2) f(z) - f(20) Wo Wo f'(20) g'(20)