Re: Equation complexe

Op 27/02/2025 om 17:20 schreef Richard Hachel:

Le 27/02/2025 à 08:16, Moebius a écrit :
 

((+1+𝑖)⋅3/√2)^4 = -81
((+1-𝑖)⋅3/√2)^4 = -81
((-1+𝑖)⋅3/√2)^4 = -81
((-1-𝑖)⋅3/√2)^4 = -81

 ((+1+𝑖)⋅3/√2)^4 = -81
((+1+𝑖)^4(3/√2)^4 = -81
(1+2i+i²)(1+2i+i²)(3/√2)^4=-81
i²=-1

 > (2i²)(81/4)=(i²)(81/2)=-81
Here you go wrong.. it should say:
(2i)²(81/4)=(i²)81=-81

i²=-1
-40.5=-81
 C'est absurde.
 Etc....
Non, non, non, non...
 (3i²)^4=-81
i^4=-1 (Hachel copyrights)
3^4=81
   R.H.