Update cheatsheet.fr.md

12.temporary_ins/69.waves/30.n3/20.overview/cheatsheet.fr.md

@@ -1701,9 +1701,9 @@ $`\quad\quad \;\; = \cdots`$
    &-\,2i\,\Delta A_{1-2}\,sin\,\theta_{12}\cdot e^{\,i\,\theta_{moy}}\end{array}`$**   
   <br>
 
- * L'**onde réelle** est la *partie réelle de l'onde complexe* :    
+* L'**onde réelle** est la *partie réelle de l'onde complexe* :    
   <br>
-  $`U(\overrightarrow{r},t)\,=\,\mathscr{R}e\big[\underline{U}(\overrightarrow{r},t)\big]`$   
+  **$`\mathbf{U(\overrightarrow{r},t)\,=\,\mathscr{R}e\big[\underline{U}(\overrightarrow{r},t)\big]}`$**   
   <br>
   $`\begin{align}\; = \;&\mathscr{R}e\big[\,2\,A_{moy}\,cos(\theta_{12})\; e^{\,i\,\theta_{moy}}\\
    &-\,2i\,\Delta A_{1-2}\,sin(\theta_{12})\; e^{\,i\,\theta_{moy}}\big]\end{align}`$   
@@ -1713,9 +1713,9 @@ $`\quad\quad \;\; = \cdots`$
   $`\begin{align}\;= \;&\mathscr{R}e \big[\,2\,A_{moy}\,cos(\theta_{12})\;(cos\,\theta_{moy}\,+\,i\,sin\,\theta_{moy})\\
    &-\,2i\,\Delta A_{1-2}\,sin(\theta_{12})\;(cos\,\theta_{moy}\,+\,i\,sin\,\theta_{moy})\big]\end{align}`$  
   <br>
-  $`\begin{align}\; = &2\times\mathscr{R}e \big[ \\
-  \,(\,A_{moy}\,cos\,\theta_{12}\;cos\,\theta_{moy}\,+\,\Delta A_{1-2}\,sin\,\theta_{12}\;sin\,\theta_{moy}\,) \\
-  \,+\,i\,(\,A_{moy}\,cos\,\theta_{12}\;sin\,\theta_{moy}\,-\,\Delta A_{1-2}\,sin\,\theta_{12}\;sin\,\theta_{moy}\,)\big] \\
+  $`\; \begin{align}= & 2\times\mathscr{R}e \big[ \\
+  &\,(\,A_{moy}\,cos\,\theta_{12}\;cos\,\theta_{moy}\,+\,\Delta A_{1-2}\,sin\,\theta_{12}\;sin\,\theta_{moy}\,) \\
+  &\,+\,i\,(\,A_{moy}\,cos\,\theta_{12}\;sin\,\theta_{moy}\,-\,\Delta A_{1-2}\,sin\,\theta_{12}\;sin\,\theta_{moy}\,)\big] \\
   \end{align}`$