From e317afb07e02df5cde08a470d7682d4099373efb Mon Sep 17 00:00:00 2001
From: Claude Meny <claude.meny@irap.omp.eu>
Date: Thu, 19 Mar 2020 18:46:17 +0100
Subject: [PATCH] Update textbook.fr.md

---
 .../textbook.fr.md                                   | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md
index 594df551a..c275ed805 100644
--- a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md
+++ b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetic-waves-vacuum-main/textbook.fr.md
@@ -212,13 +212,21 @@ François & 9,7 & Refusé\\
 Gilbert & 18,7 & Admis\\
 Jean & 12,3 & Admis\\
 \end{tabular}`$
--->
+
 
 
 \begin{eqnarray}
 \overrightarrow{E}(\overrightarrow{r},t)=\overrightarrow{E}(\overrightarrow{u}\cdot\overrightarrow{r}-ct)\\
 \overrightarrow{B}(\overrightarrow{r},t)=\overrightarrow{B}(\overrightarrow{u}\cdot\overrightarrow{r}-ct)\\
-\end{eqnarray}
+\end{eqnarray}-->
+
+$`\left \{
+   \begin{array}{r c l}
+      AB  & = & 192 \\
+      C   & = & 5\,896 \\
+      DEF & = & 0,5
+   \end{array}
+   \right .`$
 
 #### Onde plane monochromatique