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 5a2dad1a7..594df551a 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
@@ -205,15 +205,20 @@ $`\overrightarrow{u}`$ est le vecteur caractérisant la direction de l'onde.
 Onde EM plane progressive :<br>
 $`\Longleftrightarrow \;\overrightarrow{B}`$
 
+<!--
 $`\begin{tabular}{l c r}
 Candidat & Note $N$ & Résultat\\
 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}
 
 #### Onde plane monochromatique