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JOURNALS // Proceedings of the Yerevan State University, series Physical and Mathematical Sciences // Archive

Proceedings of the YSU, Physical and Mathematical Sciences, 2016 Issue 1, Pages 7–11 (Mi uzeru92)

Mathematics

A differentiation and divided difference formula for rational functions

G. Y. Mkrtchyan, Ye. S. Mkrtchyan

Yerevan State University

Abstract: In this paper a new differentiation and divided difference formula for rational functions is proved. The main result is a connection between divided differences of two rational functions with the same numerator, where the knots of one divided difference coincide with the zeros of the denominator of another rational function.

Keywords: rational function, divided difference.

MSC: Primary 41A20; Secondary 65D05

Received: 25.12.2015
Accepted: 09.02.2016

Language: English



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