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On the correctness of the determination of trigonometric functions by the system of functional equations
The article shows that the system of the functional equations $S(x+y)=S(x)C(y)+S(y)C(x),\,C(x+y)=C(x)C(y)-S(y)S(x)$ denes a broader class of the functions than the trigonometric equations. The conditions, which must be added to this system to obtain the unique solution have been developed $S(x)=\sin...
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| Main Authors: | , |
|---|---|
| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
Vasyl Stefanyk Precarpathian National University
2013-01-01
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| Colecção: | Karpatsʹkì Matematičnì Publìkacìï |
| Acesso em linha: | http://journals.pu.if.ua/index.php/cmp/article/view/47 |
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