Update cheatsheet.fr.md

12.temporary_ins/90.electromagnetism-in-vacuum/20.electromagnetic-waves-vacuum/20.overview/cheatsheet.fr.md

@@ -127,16 +127,16 @@ puis d'une onde plane progressive monochromatique (OPPM).
   $`\dfrac{\partial \overrightarrow{E}}{\partial x}=\dfrac{\partial \overrightarrow{E}}{\partial y}=0`$   
   <br>
    $`\Longrightarrow
-   \dfrac{\partial E_x}{\partial x}=\dfrac{\partial E_y}{\partial x}=\dfrac{\partial E_z}{\partial x}
-   =\dfrac{\partial E_x}{\partial y}=\dfrac{\partial E_y}{\partial y}=\dfrac{\partial E_z}{\partial y}=0`$   
+   \dfrac{\partial E_x}{\partial x}=\dfrac{\partial E_y}{\partial x}=\dfrac{\partial E_z}{\partial x}`$
+   $`\,=\dfrac{\partial E_x}{\partial y}=\dfrac{\partial E_y}{\partial y}=\dfrac{\partial E_z}{\partial y}=0`$   
    <br>
    et   
    <br>
    $`\dfrac{\partial \overrightarrow{B}}{\partial x}=\dfrac{\partial \overrightarrow{B}}{\partial y}=0`$   
   <br>
    $`\Longrightarrow
-   \dfrac{\partial B_x}{\partial x}=\dfrac{\partial B_y}{\partial x}=\dfrac{\partial B_z}{\partial x}
-   =\dfrac{\partial B_x}{\partial y}=\dfrac{\partial B_y}{\partial y}=\dfrac{\partial B_z}{\partial y}=0`$   
+   \dfrac{\partial B_x}{\partial x}=\dfrac{\partial B_y}{\partial x}=\dfrac{\partial B_z}{\partial x}`$
+   $`\,=\dfrac{\partial B_x}{\partial y}=\dfrac{\partial B_y}{\partial y}=\dfrac{\partial B_z}{\partial y}=0`$   
 
 <br>
 
@@ -163,7 +163,7 @@ puis d'une onde plane progressive monochromatique (OPPM).
 * Le théorème de *Maxwell-Faraday* implique :   
   <br>
   $`\left.
-    \begin{align} &\underbrace{\overrightarrow{rot}\,\overrightarrow{E}=-\dfrac{\partial \overrightarrow{B}}{\partial t}}_{\color{blue}{\text{th. de Maxwell-Faraday}}\\
+    \begin{align} &\underbrace{\overrightarrow{rot}\,\overrightarrow{E}=-\dfrac{\partial \overrightarrow{B}}{\partial t}}}_{\color{blue}{\text{th. de Maxwell-Faraday}}\\
     \\
     &\overrightarrow{E}\;uniforme\\
     &dans\;tout\;plan\;\perp\overrightarrow{e_z}\end{align}\right\}`$