Update cheatsheet.fr.md

12.temporary_ins/20.magnetostatics-vacuum/10.effects-stationary-magnetic-field/20.overview/cheatsheet.fr.md

@@ -158,23 +158,28 @@ $`\quad\quad\Longrightarrow \overrightarrow{dF_{mag}}= \dens_{libre} \cdot d\tau
 
 * On nomme **force de Laplace** cette *force magnétique $`\overrightarrow{dF_B}`$ exercée sur chaque élément $`dC`$* du circuit :   
 <br>
-**$`\mathbf{\overrightarrow{dF}_{Laplace}}`$** *$`\begin{align}\;
-&= \dens_{libre} \cdot \underbrace{d\tau}_{\color{blue}{\;\;=\\dS\,dl}} \cdot (\overrightarrow{v}_{dér\,/\,dC} \wedge \overrightarrow{B})\\
+**$`\mathbf{\overrightarrow{dF}_{Laplace}}`$** 
+$`\begin{align}\;
+&= \dens_{libre} \cdot \underbrace{d\tau}_{\color{blue}{\;\;=\\dS\,dl}} 
+\cdot (\overrightarrow{v}_{dér\,/\,dC} \wedge \overrightarrow{B})\\
 \\
-&=\underbrace{(\dens_{libre}\cdot \overrightarrow{v}_{dér\,/\,dC}}_{\color{blue}{=\,\overrightarrow{j}_{cond}}}
-   \cdot \underbrace{dS}_{\color{blue}{\vec{dS}\parallel\vec{v}}}\cdot \underbrace{dl}_{\color{blue}{\vec{dl}\parallel\vec{v}}}) \wedge \overrightarrow{B}\\
+&= \underbrace{(\dens_{libre}\cdot \overrightarrow{v}_{dér\,/\,dC}}_{\color{blue}{=\,\overrightarrow{j}_{cond}}}
+   \cdot \underbrace{dS}_{\color{blue}{\vec{dS}\parallel\vec{v}}}
+   \cdot \underbrace{dl}_{\color{blue}{\vec{dl}\parallel\vec{v}}}) \wedge \overrightarrow{B}\\
 \\
-&= \underbrace{\overrightarrow{j}_{cond}}\cdot\overrightarrow{dS}}_{\color{blue}{=\,I}}\;\overrightarrow{dl}\wedge\overrightarrow{B}
+&= \underbrace{\overrightarrow{j}_{cond}\cdot\overrightarrow{dS}}_{\color{blue}{=\,I}}\;\overrightarrow{dl}\wedge\overrightarrow{B}
 \end{align}`$
 
-**$`\mathbf{\overrightarrow{dF}_{Laplace}}`$** *$`\begin{align}\;
-&= \dens_{libre} \cdot \underbrace{d\tau}_{\color{blue}{\;\;=\\dS\,dl}} \cdot (\overrightarrow{v}_{dér\,/\,dC} \wedge \overrightarrow{B})\\
+**$`\mathbf{\overrightarrow{dF}_{Laplace}}`$** $`
+\begin{align}\;
+&= \dens_{libre} \cdot \underbrace{d\tau}_{\color{blue}{\;\;=\\dS\,dl}}
+\cdot (\overrightarrow{v}_{dér\,/\,dC} \wedge \overrightarrow{B})\\
 \\
-&=\underbrace{(\dens_{libre}\cdot \overrightarrow{v}_{dér\,/\,dC}}_{\color{blue}{=\,\overrightarrow{j}_{cond}}}
+&= \underbrace{(\dens_{libre}\cdot \overrightarrow{v}_{dér\,/\,dC}}_{\color{blue}{=\,\overrightarrow{j}_{cond}}}
    \cdot \underbrace{dS}_{\color{blue}{\vec{dS}\parallel\vec{v}}}\cdot \underbrace{dl}_{\color{blue}{\vec{dl}\parallel\vec{v}}}) \wedge \overrightarrow{B}
 \end{align}`$
 
-**$`\mathbf{\overrightarrow{dF}_{Laplace}}`$** *$`\begin{align}\;
+**$`\mathbf{\overrightarrow{dF}_{Laplace}}`$** $`\begin{align}\;
 &= \dens_{libre} \cdot \underbrace{d\tau}_{\color{blue}{\;\;=\\dS\,dl}} \cdot (\overrightarrow{v}_{dér\,/\,dC} \wedge \overrightarrow{B})
 \end{align}`$