Eulers formel – Wikipedia
https://no.wikipedia.org/wiki/Eulers_formelEulers formel er en matematisk ligning som gir en fundamental forbindelse mellom den naturlige eksponentialfunksjonen og de trigonometriske funksjonene. Vanligvis skrives den som der x er et reelt tall, e er Eulers tall som er grunntallet for naturlige logaritmer og i er den imaginære enheten definert som kvadratroten av -1.
Gamma function - Wikipedia
https://en.wikipedia.org/wiki/Gamma_functionEuler's definition as an infinite product When seeking to approximate for a complex number , it is effective to first compute for some large integer . Use that to approximate a value for , and then use the recursion relation backwards times, to unwind it to an approximation for . Furthermore, this approximation is exact in the limit as
Euler's formula - Wikipedia
en.wikipedia.org › wiki › Euler&Euler's formula, named after Leonhard Euler, is a mathematical formula in complex analysis that establishes the fundamental relationship between the trigonometric functions and the complex exponential function. Euler's formula states that for any real number x: = + ,