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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2023-67-359-365</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1148</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>О методе Бернулли–Эйлера–Лагранжа–Эйткена вычисления корней полиномов</article-title><trans-title-group xml:lang="en"><trans-title>On the Bernoulli–Euler–Lagrange–Aitken numerical method for roots of polynomials</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лебедев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lebedev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Владимирович Лебедев, д-р физ.-мат. наук, профессор, заведующий кафедрой</p><p>220050</p><p>пр. Независимости, 4</p><p>Минск</p></bio><bio xml:lang="en"><p>Andrei V. Lebedev, D. Sc. (Physics and Mathematics), Professor, Head of the Department</p><p>220050</p><p>4, Nezavisimosti Ave.</p><p>Minsk</p></bio><email xlink:type="simple">lebedev@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трубников</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Trubnikov</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Валентинович Трубников, д-р физ.-мат. наук, профессор</p><p>210038</p><p>пр. Московский, 33</p><p>Витебск</p></bio><bio xml:lang="en"><p>Yurii V. Trubnikov, D. Sc. (Physics and Mathematics), Professor</p><p>210038</p><p>33, Moskovskiy Ave.</p><p>Vitebsk</p></bio><email xlink:type="simple">yurii_trubnikov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернявский</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernyavsky</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Михайлович Чернявский, преподаватель</p><p>210038</p><p>пр. Московский, 33</p><p>Витебск</p></bio><bio xml:lang="en"><p>Mikhail M. Chernyavsky, Lecturer</p><p>210038</p><p>33, Moskovskiy Ave.</p><p>Vitebsk</p></bio><email xlink:type="simple">misha360ff@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Витебский государственный университет имени П. М. Машерова</institution></aff><aff xml:lang="en"><institution>Vitebsk State University named after P. M. Masherov</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>30</day><month>10</month><year>2023</year></pub-date><volume>67</volume><issue>5</issue><fpage>359</fpage><lpage>365</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лебедев А.В., Трубников Ю.В., Чернявский М.М., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Лебедев А.В., Трубников Ю.В., Чернявский М.М.</copyright-holder><copyright-holder xml:lang="en">Lebedev A.V., Trubnikov Y.V., Chernyavsky M.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/1148">https://doklady.belnauka.by/jour/article/view/1148</self-uri><abstract><p>   Развит метод Эйлера–Лагранжа и вычислены все корни произвольного полинома P(z) с комплексными коэффициентами на основе подсчета пределов отношений определителей (как и в методах Бернулли–Эйткена–Никипорца), построенных по коэффициентам разложений в ряды Тейлора и Лорана функции P′(z) / P(z).</p></abstract><trans-abstract xml:lang="en"><p>   The article presents a development of the Euler–Lagrange method for calculation of all roots of an arbitrary polynomial P(z) with complex coefficients based on the calculation of the limits of ratios of determinants (as in the Bernoulli–Aitken–Nikiporets methods) built by means of the Taylor and Laurent series coefficients for the function P′(z) / P(z).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>корень полинома</kwd><kwd>ряд Тейлора</kwd><kwd>ряд Лорана</kwd><kwd>определитель Адамара</kwd><kwd>определитель Вандермонда</kwd></kwd-group><kwd-group xml:lang="en"><kwd>root of a polynomial</kwd><kwd>Taylor series</kwd><kwd>Laurent series</kwd><kwd>Hadamard determinant</kwd><kwd>Vandermonde determinant</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Bernoulli, D. 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