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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: sci.math
Subject: Re: Equation complexe
Date: Tue, 25 Feb 2025 14:08:03 -0800
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On 2/25/2025 6:23 AM, Richard Hachel wrote:
> x^4=-81
> 
> What is x?

what about x^7 = -81 ?

Using my own code:

r0 = (1.68791,0.812857)
r1 = (0.41688,1.82647)
r2 = (-1.16807,1.46472)
r3 = (-1.87344,-1.63782e-07)
r4 = (-1.16807,-1.46472)
r5 = (0.416881,-1.82647)
r6 = (1.68792,-0.812856)

p0 = (-81,-2.63931e-05)
p1 = (-81,-1.93183e-06)
p2 = (-81,2.25295e-05)
p3 = (-81,-4.69908e-05)
p4 = (-81,-0.000177025)
p5 = (-81,-7.53158e-05)
p6 = (-81,-0.000263285)