Update textbook.fr.md

4c1cb931 · Claude Meny · 6d5babce · 4c1cb931
Commit 4c1cb931 authored Feb 15, 2021 by Claude Meny
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textbook.fr.md ...cal-content/40.classical-mechanics/10.main/textbook.fr.md +9 -1

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--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/10.main/textbook.fr.md
@@ -202,5 +202,13 @@ Partícula :

 [CME][FR] $`\overrightarrow{L}=\overrightarrow{r}\wedge\overrightarrow{p}`$

-[ES]
+[ES] producto cruz, en coordenadas cartesianas :<br>
+
+
+<br>
+$`\overrightarrow{L}=\begin{vmatrix}
+\hat{i}&\hat{j}&\hat{k}\\
+x & y & z\\
+p_x & p_y & p_z\end{vmatrix}`$
+