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From: sobriquet <dohduhdah@yahoo.com>
Newsgroups: sci.math
Subject: Re: Equation complexe
Date: Thu, 27 Feb 2025 21:48:27 +0100
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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.
> 
>