Geodesic
A differentiation and divided difference formula for rational functions
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2016), pp. 7-11.

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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. 
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G. Y. Mkrtchyan; Ye. S. Mkrtchyan. A differentiation and divided difference formula for rational functions. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2016), pp. 7-11. http://geodesic.mathdoc.fr/item/UZERU_2016_1_a1/

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