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Coucou !

z = 1 / (1 + iV3) = 1/z'

z'= 1 + iV3 -> |z'|=V(1²+V3²)=V4=2 

z'=2(1/2+i*V3/2)

z'= 2 * (cos(π/3) + i * sin(π/3))

z'=2*ei*(π/3)

Donc :

z = 1 / 2*ei*(π/3)= 0.5 * 1 / ei*(π/3) = 0.5 * e-i*(π/3) et non pas 2 e-i*(π/3)

 

C'est plus clair ?

 

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