Vol. 2021 No. 1

DOI: https://doi.org/10.20535/mmtu-2021.1

Published: 2021-12-27

Editorial

In memory of Victor Oleksandrovych Haidey

5-6
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Analytical methods in mathematics

The boundary value problems for the linear singularly perturbed systems of differential-algebraic equations

M.B. Vira, P.F. Samusenko

7-17
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Methods of teaching and history of mathematics

Finding finite sums, products, and limits of some numerical sequences. Part 2. Application of methods of higher mathematics. Finding sums of series

V.O. Bilyi, O.G. Bilyi

19-38
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Comparison of the results of calculating sin1 ° using the al-Kashi method and modern technologies

O.O. Vrublovska, H.O. Masliuk

39-46
The philosophy of music of Pythagoras

N.R. Konovalova

47-59
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Open Mathematical Olympiad of Igor Sikorsky Kyiv Polytechnic Institute, 2021. Round I

A.V. Syrotenko, V.V. Pavlenkov, V.Yu. Bohdanskyi

61-73
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