Results 11 to 20 of about 2,869,605 (252)

Trigonometric functions and some trigonometrical identities [PDF]

open access: yesComputational Algorithms and Numerical Dimensions, 2023
Trigonometry is a part of mathematics which deals with specific functions of angles and their application, and it is studies of the dependence between the sides and angles of a triangle.
Laxmi Rathour   +4 more
doaj   +2 more sources

Sharp Inequalities for Trigonometric Functions [PDF]

open access: yesAbstract and Applied Analysis, 2014
We establish several sharp inequalities for trigonometric functions and present their corresponding inequalities for bivariate means.
Zhen-Hang Yang   +3 more
doaj   +2 more sources

p-Trigonometric and p-Hyperbolic Functions in Complex Domain

open access: yesAbstract and Applied Analysis, 2016
We study extension of p-trigonometric functions sinp and cosp and of p-hyperbolic functions sinhp and coshp to complex domain. Our aim is to answer the question under what conditions on p these functions satisfy well-known relations for usual ...
Petr Girg, Lukáš Kotrla
doaj   +2 more sources

Extended Levett trigonometric series. [PDF]

open access: yesPLoS ONE
An extension of two finite trigonometric series is studied to derive closed form formulae involving the Hurwitz-Lerch zeta function. The trigonometric series involves angles with a geometric series involving the powers of 3.
Robert Reynolds
doaj   +2 more sources

Trigonometric function transformation and its application in software reliability modeling. [PDF]

open access: yesPLoS ONE
ContextMany models based on S-shaped functions demonstrate their advantages in non-homogeneous Poisson process software reliability modeling. However, three well-known types have been used without deep mathematical evaluation.
Dai-Nghia Vy   +4 more
doaj   +2 more sources

Trigonometric Approximations for Some Bessel Functions

open access: yesActive and Passive Electronic Components, 1999
Formulas are obtained for approximating the tabulated Bessel functions Jn(x), n = 0–9 in terms of trigonometric functions. These formulas can be easily integrated and differentiated and are convenient for personal computers and pocket calculators.
Muhammad Taher Abuelma'atti
doaj   +2 more sources

On New Proofs of Inequalities Involving Trigonometric Functions [PDF]

open access: yes, 2000
In the note, some new proofs for inequalities invoving trigonometric functions are ...
Qi, Feng   +3 more
core   +6 more sources

Inequalities of Some Trigonometric Functions [PDF]

open access: yes, 2003
By using two identities and two inequalities relating to Bernoulli’s and Euler’s numbers and power series expansions of cotangent function, secant function, cosecant function and logarithms of functions involving sine function, cosine function and ...
Qi, Feng, Chen, Chao-Ping
core   +6 more sources

Parameter N Analysis on the Rational-Talbot Algorithm for Numerical Inversion of Laplace Transform

open access: yesVetor, 2021
This article investigates the numerical inversion of the Laplace Transform by the Rational-Talbot method and analyzes the influence on the variation of the free parameter N established by the technique when applied to certain functions.
Elisandra Freitas   +4 more
doaj   +5 more sources

On the boundedness of the partial sums operator for the Fourier series in the function classes families associated with harmonic intervals [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
The article is devoted to the study of some data from the theory of functions approximation by trigonometric polynomials with a spectrum from special sets called harmonic intervals.
Gulsim A. Yessenbayeva   +3 more
doaj   +3 more sources

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