From cb850cf38c51a5c3117933f31af2312eb31a78b8 Mon Sep 17 00:00:00 2001
From: Claude Meny <claude.meny@irap.omp.eu>
Date: Fri, 20 Mar 2020 01:04:47 +0100
Subject: [PATCH] Update textbook.fr.md

---
 .../textbook.fr.md                            | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 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 5c9765f0b..27c0bfede 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
@@ -310,9 +310,9 @@ quelconque de l'espace, est :
 
 $`\hspace{0.6cm}\overrightarrow{E}=\left|
    \begin{array}{r c l}
-      E_x=E_O\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_x)\\
-      E_y=E_O\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_y)\\
-      E_z=E_O\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_z)\\
+      E_x=E_0x\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_x)\\
+      E_y=E_0y\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_y)\\
+      E_z=E_0z\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_z)\\
    \end{array}
    \right.`$
 
@@ -320,9 +320,9 @@ $`\hspace{0.6cm}\overrightarrow{E}=\left|
 
 $`\hspace{0.6cm}\overrightarrow{B}=\left|
    \begin{array}{r c l}
-      B_x=E_O\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_x)\\
-      B_y=E_O\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_y)\\
-      B_z=E_O\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_z)\\
+      B_x=B_0x\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_x)\\
+      B_y=B_0y\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_y)\\
+      B_z=B_0z\cdot cos(\pm\,\overrightarrow{k}\cdot\overrightarrow{r}\pm \omega\,t+\phi_z)\\
    \end{array}
    \right.`$
    
@@ -336,8 +336,8 @@ $`\overrightarrow{e_z}`$, alors l'écriture de l'OPPM se simplifie :
 
 $`\hspace{0.6cm}\overrightarrow{E}=\left|
    \begin{array}{r c l}
-      E_x=E_O\cdot cos(kz - \omega\,t + \phi_x)\\
-      E_y=E_O\cdot cos(kz - \omega\,t + \phi_y)\\
+      E_x=E_0x\cdot cos(kz - \omega\,t + \phi_x)\\
+      E_y=E_0y\cdot cos(kz - \omega\,t + \phi_y)\\
       E_z=0\\
    \end{array}
    \right.`$
@@ -347,7 +347,7 @@ par exemple le vecteur $`\overrightarrow{e_x}`$, alors l'écriture de l'OPPM se
 
 $`\hspace{0.6cm}\overrightarrow{E}=\left|
    \begin{array}{r c l}
-      E_x=E_O\cdot cos(kz - \omega\,t + \phi_x)\\
+      E_x=E_0\cdot cos(kz - \omega\,t + \phi_x)\\
       E_y=0)\\
       E_z=0\\
    \end{array}
@@ -355,7 +355,7 @@ $`\hspace{0.6cm}\overrightarrow{E}=\left|
  
  soit encore :
  
- $`\overrightarrow{E}(\overrightarrow{r},t)=E_O\cdot cos(kz - \omega\,t + \phi_x)\;\overrightarrow{e_x}`$
+ $`\overrightarrow{E}(\overrightarrow{r},t)=E_0\cdot cos(kz - \omega\,t + \phi_x)\;\overrightarrow{e_x}`$