Question of the Complex Analysis
$latex \mathbf{Question:} (a) \text{ Suppose that the sequence} \{c_k\} \text{is bounded. then the radius of } \\ \text{ convergence of } \sum_{k \geq 0}c_k(z-z_0)^k \text{is at least 1 }\\ (b) \text{ Suppose that the sequence } […]