Exponential Trigonometric Functions --- From the Book

Davis, Martin
January 2003
Mathematical Intelligencer;Winter2003, Vol. 25 Issue 1, p5
Academic Journal
Discusses how the tools of complex variable theory can be used to develop the properties of the exponential and trigonometric functions, starting from scratch. Power series' definition of function analytic within its circle of convergence; Term-by-term differentiation; Cauchy's theorem and its corollaries; Definition of sine and cosine.


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