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Path: ...!feeds.phibee-telecom.net!2.eu.feeder.erje.net!feeder.erje.net!proxad.net!feeder1-2.proxad.net!usenet-fr.net!.POSTED!not-for-mail From: Olivier Miakinen <om+news@miakinen.net> Newsgroups: fr.sci.maths Subject: Re: La courbe du jour Date: Fri, 28 Mar 2025 16:08:40 +0100 Organization: There's no cabale Lines: 16 Message-ID: <vs6e1o$9b4$1@cabale.usenet-fr.net> References: <Q88I2Gip4NnZRHmaO0SWStPyBVU@jntp> NNTP-Posting-Host: 163.235.138.88.rev.sfr.net Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: cabale.usenet-fr.net 1743174520 9572 88.138.235.163 (28 Mar 2025 15:08:40 GMT) X-Complaints-To: abuse@usenet-fr.net NNTP-Posting-Date: Fri, 28 Mar 2025 15:08:40 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.4 Cancel-Lock: sha256:RBJ8ZsgqBnW/tYT/qu1JcXK8SA2O9g+qJLDzRY5h1cg= Cancel-Key: sha256:f0rHwfZXp5iKFjTbX/I5bQXh9Dta33nWBzLi8f9oaoM= In-Reply-To: <Q88I2Gip4NnZRHmaO0SWStPyBVU@jntp> Bytes: 1466 Le 28/03/2025 13:31, Richard Hachel a écrit : > > Soit la fonction f(x)=x⁴-2x²+8 > > [...] > > Troisième question (6 points) : > 3. Donner *les deux* racines complexes de f(x). Moins 6 points pour l'auteur de l'énoncé. Dans le corps des complexes, un polynôme de degré *quatre* a forcément *quatre* racines en comptant la multiplicité. -- Olivier Miakinen