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Euler formulas

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Formulas connecting the exponential and trigonometric functions:

These hold for all values of the complex variable . In particular, for a real value the Euler formulas become

These formulas were published by L. Euler in [1].

References

[1] L. Euler, Miscellanea Berolinensia , 7 (1743) pp. 193–242
[2] L. Euler, "Einleitung in die Analysis des Unendlichen" , Springer (1983) (Translated from Latin)
[3] A.I. Markushevich, "A short course on the theory of analytic functions" , Moscow (1978) (In Russian)


Comments

References

[a1] K.R. Stromberg, "An introduction to classical real analysis" , Wadsworth (1981)
How to Cite This Entry:
Euler formulas. E.D. Solomentsev (originator), Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Euler_formulas&oldid=14630
This text originally appeared in Encyclopedia of Mathematics - ISBN 1402006098