Update cheatsheet.fr.md

45167972 · Claude Meny · 83c8d8e1 · 45167972
Commit 45167972 authored Sep 27, 2022 by Claude Meny
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cheatsheet.fr.md ...70.combinaisons-of-operators/20.overview/cheatsheet.fr.md +3 -0

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--- a/12.temporary_ins/08.grad-div-rot/70.combinaisons-of-operators/20.overview/cheatsheet.fr.md
+++ b/12.temporary_ins/08.grad-div-rot/70.combinaisons-of-operators/20.overview/cheatsheet.fr.md
@@ -78,3 +78,6 @@ $`\quad =

 * Cherchons les coordonnées cartésiennes du deuxième terme, $`\overrightarrow{grad}\big(div\;\overrightarrow{E}\big)`$

+$`\color{blue}{div\,\overrightarrow{U}=\dfrac{\partial U_x}{\partial x}+\dfrac{\partial U_y}{\partial y}+\dfrac{\partial U_z}{\partial z}}`$
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