Forme algébrique d'un nombre complexe
Middle school year 5 STI2D Spécialité ; Middle school year 6 Générale Experte



Soit x et y deux nombres réels.
Soit z le nombre complexe de partie réelle x et de partie imaginaire y.
La forme algébrique de z est x+iy.


Soit x, y, x et y quatre nombres réels.
Si z=x+iy et z =x +iy , alors :
  • la forme algébrique de z+z est (x+x )+i(y+y ) ;
  • la forme algébrique de z×z est (xx yy )+i(xy +x y).
Author of the page: Euler, Académie de Versailles

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