Results 51 to 60 of about 5,969,165 (181)

Algebraic Properties of Generalized Trigonometric Function Transforms

open access: yesApplied Sciences
The generalized trigonometric functions called Ateb-functions are considered. On this basis, a generalization of the Fourier transform is constructed and called the Ateb-transform.
Ivanna Dronyuk   +2 more
doaj   +1 more source

Complexity Analysis of Primal-Dual Interior-Point Methods for Linear Optimization Based on a New Parametric Kernel Function with a Trigonometric Barrier Term

open access: yesAbstract and Applied Analysis, 2014
We introduce a new parametric kernel function, which is a combination of the classic kernel function and a trigonometric barrier term, and present various properties of this new kernel function.
X. Z. Cai   +3 more
doaj   +1 more source

Study on Reduced Cost of Non-Salient Machine System Using MTPA Angle Pre-Compensation Method Based on EEMF Sensorless Control

open access: yesEnergies, 2018
When a consumer chooses a product, one of the most important considerations is price. Therefore, cost reduction is the most important factor when manufacturing a product.
Kyoung Jin Joo, Joon Sung Park, Ju Lee
doaj   +1 more source

Cubature Formulas for Oscillatory Integrals with Given Function Traces on Lines

open access: yesКібернетика та комп'ютерні технології
Introduction. Numerical integration of rapidly oscillating multivariable functions plays an important role in applied mathematics, particularly in image processing, computed tomography, and mathematical modeling.
Yevheniia Khurdei, Vladyslav Ivanov
doaj   +1 more source

Approximations to inverse tangent function

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we present a sharp Shafer-type inequality for the inverse tangent function. Based on the Padé approximation method, we give approximations to the inverse tangent function. Based on the obtained result, we establish new bounds for arctanx.
Quan-Xi Qiao, Chao-Ping Chen
doaj   +1 more source

Boundedness of approximate trigonometric functions

open access: yesApplied Mathematics Letters, 2009
\textit{J. A. Baker} [Proc. Am. Math. Soc. 80, 411--416 (1980; Zbl 0448.39003)] and \textit{W. P. Cholewa} [Proc. Am. Math. Soc. 88, 631--634 (1983; Zbl 0547.39003)] investigated the stability of the cosine functional equation and sine functional equation, respectively. In this paper the authors consider the following functional inequality \[ |f(x+y)-f(
Gwang Hui Kim, Young Whan Lee
openaire   +2 more sources

Basics of trigonometry from the passage of the trigonometric ratio trigonometric function

open access: yes, 2012
El presente trabajo muestra el paso de la razón trigonométrica a la función trigonométrica empezando por un recorrido histórico, su nacimiento, evolución y algunas aplicaciones importantes como son el problema de la cuerda vibrante y la serie ...
Salcedo Garzón, Ginés
core  

Path-tracking control based on a dynamic trigonometric function

open access: yesInformation Processing in Agriculture, 2019
With the rapid development of the modern vehicle industry, the automated control of new vehicles is in increasing demand. However, traditional course control has been unable to meet the actual needs of such demand.
Yunyi Wang   +5 more
doaj   +1 more source

Identities involving trigonometric, zeta and partition functions [PDF]

open access: yes
Using well-known trigonometric functions, we establish identities involving the multiple zeta function and the multiple lambda function. Furthermore, we derive new identities by applying classical trigonometric relations.
Da Silva, Robson   +2 more
core   +2 more sources

New Interaction Patterns for the Truncated M-Fractional Kadomtsev–Petviashvili Equation in High-Dimensional Space

open access: yesFractal and Fractional
A truncated M-fractional Kadomtsev–Petviashvili (KP) equation in high-dimensional space has been proposed. The model provides the oretical support for studying the interaction patterns among waves.
Lihua Zhang   +4 more
doaj   +1 more source

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