1549312215-Complex_Analysis_for_Mathematics_and_Engineering_5th_edition__Mathews

4.3 • GEOMETRI C SERIES AND CONVERGENCE THEOREMS 141

4.3 Geometric Series and Convergence Theorems

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We begin this section by presenting a series of the form L: z", which is called a
n=O
geometric series and is one of the most important series in mathematics.