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test-regular-2
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d824ee80
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d824ee80
authored
Aug 20, 2020
by
Claude Meny
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Update textbook.fr.md
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00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md
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@@ -557,11 +557,22 @@ $`(\overrightarrow{U},\overrightarrow{V},\overrightarrow{W})=\overrightarrow{U}\
<br>
$
`(\overrightarrow{U},\overrightarrow{V},\overrightarrow{W})
=-\,(\overrightarrow{V},\overrightarrow{U},\overrightarrow{W})
=-(\overrightarrow{U},\overrightarrow{W},\overrightarrow{V})
=-(\overrightarrow{W},\overrightarrow{V},\overrightarrow{U}
]
)`
$
=-(\overrightarrow{W},\overrightarrow{V},\overrightarrow{U})`
$
##### Componentes de un producto mixto en base ortonormal / Composantes d'un produit mixte dans une base orthonormée / Components of a triple product in an orthonormal basis
$
`(\vec{e_1},\vec{e_2},...,\vec{e_n})`
$ est une base orthonormée
$
`\displaystyle\quad\forall \overrightarrow{U}\in\mathcal{P}\quad \overrightarrow{U}=\sum_{i=1}^n\;U_i\cdot\vec{e_i}`
$
$
`\displaystyle\quad\forall \overrightarrow{V}\in\mathcal{P}\quad \overrightarrow{V}=\sum_{i=1}^n\;V_i\cdot\vec{e_i}`
$
$
`\displaystyle\quad\forall \overrightarrow{W}\in\mathcal{P}\quad \overrightarrow{W}=\sum_{i=1}^n\;VW_i\cdot\vec{e_i}`
$
*
[
ES
]
:
<br>
[
FR
]
Le produit mixte $
`(\vec{U},\vec{V},\vec{W})`
$ se calcule comme le déterminant
de la matrice formée par les coordonnées ordonnées en ligne des trois vecteurs
$
`\vec{U}`
$, $
`\vec{V}`
$ et $
`\vec{W}`
$ ordonnés en colonne :
<br>
[
EN
]
:
<
br
>
<br>
$
`(\vec{U},\vec{V},\vec{W})=\begin{vmatrix} U_1 & U_2 & U_3\\
V_1 & V_2 & V_3\\W_1 & W_2 & W_3\end{vmatrix}`
$
$
`=U_3 V_1 W_2 + U_1 V_2 W_3 + U_2 V_3 W_1 - U_2 V_1 W_3 - U_3 V_2 W_1 - U_1 V_3 W_2`
$
##### Produit mixte de 2 vecteurs dans une base quelconque
...
...
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