2020-05-05 07:53:14 +00:00
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\documentclass[a4paper,10pt]{article}
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\usepackage{myXsim}
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\title{Polynômes du 3e degré - Cours}
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\tribe{1ST}
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\date{Avril 2020}
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\pagestyle{empty}
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\begin{document}
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2020-05-08 16:27:20 +00:00
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\setcounter{section}{2}
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2020-05-05 07:53:14 +00:00
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\section{Racine cubique}
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\subsection*{Définition}
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L'équation
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\[
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x^3 = k
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\]
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a une unique solution appelée \textbf{racine cubique de $k$} notée
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\[
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\sqrt[3]{k} = k^{\frac{1}{3}}
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\]
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\subsubsection*{Remarque - calculatrice TI}
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On trouvera la fonction $\sqrt[3]{\ldots}$ à travers la touche \calc{math}.
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\subsubsection*{Exemple}
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Résolution de l'équation $x^3 = 5$
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2020-05-08 16:27:20 +00:00
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La solution est
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2020-05-05 07:53:14 +00:00
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\[
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x = \sqrt[3]{5} \approx 1,7
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\]
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Ce que l'on peut aussi écrire
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\[
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x = 5^{\frac{1}{3}}\approx 1,7
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\]
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\end{document}
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2020-05-08 16:27:20 +00:00
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%%% Local Variables:
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2020-05-05 07:53:14 +00:00
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%%% mode: latex
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%%% TeX-master: "master"
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%%% End:
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