Formula di de moivre biography
In mathematics, de Moivre's formula or de Moivre's theorem is an equation named after Abraham de Moivre. It states that for any real number x and integer n, [ 1 ] (cos x + i sin x) n = cos n x + i sin n x {\displaystyle (\cos x+i\sin x)^{n}=\cos nx+i\sin nx}.