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Subject: Re: Equation complexe
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Le 27/02/2025 à 16:42, Richard Hachel a écrit :
> Le 27/02/2025 à 08:47, joes a écrit :
>> Am Wed, 26 Feb 2025 20:22:01 +0000 schrieb Richard Hachel:
>>> Le 26/02/2025 à 21:10, efji a écrit :
>>> 
>>>> If you assume i^2 = i*i = -1, then i^4=1.
>>> Absolutely not.
>> -1*-1 is not 1?
> 
> Claro que si. 
> 
> Pero, i*i=i²=-1 ; (i²)²=-1 

This is obviously contradictory. (-1)*(-1) IS (i^2)*(i^2) if i^2 = -1. End 
of Story.

> It seems that the imaginary unit i is a special unit such that i^x=-1 whatever 
> x.
> 
> Mathematicians are right when they say that i=-1, that i^(-1/2)=-1, that i²=-1.

In complex numbers it is FALSE that i = -1 and also FALSE that i(-1/2) = 
-1 
(i^(-1/2) = 1/sqrt(i) = 1/sqrt(2) - i/sqrt(2)) (considering principal 
value
only, there is another which is the opposite)

Stop making up stuff, you are not only an idiot but also a liar.