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(Solved): Let f be a nonconstant analytic function in the closed disk {z:|z|<=1}. Suppose that |f(z)|=K for ...



Let f be a nonconstant analytic function in the closed disk {z:|z|<=1}. Suppose that |f(z)|=K for zin{z:|z|=1}. Show that f has a zero in D.


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