ABSTRACT
A power series is an expression of the form https://www.w3.org/1998/Math/MathML"> f ( z ) = ∑ ∗ n = 0 ∞ e a n ⋅ ∗ ( z − ∗ e c ) n ∗ , https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003440116/5c34fd59-3787-4510-b376-2cd023dd9bdb/content/math7_1.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>
