Let f(z)=∑∞n= 0  cn(z - z0)n be a power series with radius of convergence p. Show that for all r < p, using the fundamental theorem of calculus that, ∫∂Dr(z0) f(z) dz = 0.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.3: Geometric Sequences
Problem 50E
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Let f(z)=∑n= 0  cn(z - z0)be a power series with radius of convergence p. Show that for all r < p, using the fundamental theorem of calculus that, ∫∂Dr(z0) f(z) dz = 0. 

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