A series expansion of a logarithmic expression and a decreasing property of the ratio of two logarithmic expressions containing cosine

DOI10.1515/math-2023-0159zbMath1547.41026MaRDI QIDQ6611509

Yan-Fang Li, Feng Qi

Publication date: 26 September 2024

Published in: Open Mathematics (Search for Journal in Brave)

zbMATH Keywords

cosine functionderivative formuladecreasing propertymonotonicity rulelogarithmic expressionMaclaurin power series expansionratio of two differentiable functions

Mathematics Subject Classification ID

Series expansions (e.g., Taylor, Lidstone series, but not Fourier series) (41A58) Elementary functions (26A09) Exponential and trigonometric functions (33B10)

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