Update cheatsheet.fr.md

12.temporary_ins/32.sets-systems/30.n3/20.systems/20.overview/cheatsheet.fr.md

@@ -98,7 +98,7 @@ RÉSUMÉ<br>
 
   <br>
 
-   $`\Large{\left.\dfrac{dN}{dt}\right\lvert_{\,\bigt} = r\,N(t)} \quad \Longrightarrow\quad\left.\dfrac{dN}{N}\right\lvert_{\,\bigt}=r\,dt`$
+   $`\Large{\left.\dfrac{dN}{dt}\right\lvert_{\,\bigt} = r\,N(t)}\normalsize{\quad \Longrightarrow\quad\left.\dfrac{dN}{N}\right\lvert_{\,\bigt}=r\,dt}`$
 
   $`\displaystyle\begin{align}
   \quad &\Longrightarrow\;\int_{N(t_1)}^{N(t_2)}\dfrac{dN}{N}=\int_{t_1}^{t_2} r\,dt\\
@@ -111,7 +111,7 @@ RÉSUMÉ<br>
    &\Longrightarrow\; ln\,N(t_2) = ln\,N(t_1) + r\,(t_2 - t_1)\\
    \\
    &\Longrightarrow\; \underbrace{exp\big[ln\,N(t_2)\big]}_{exp(ln\,x)\;=\;x}
-   =\underbrace{exp\big[ln\,N(t_1) + r\,(t_2 - t_1)\big]}_{exp (a+b)\;=\;exp\,a\times exp\,b}\\
+   =\underbrace{exp\big[ln\,N(t_1) + r\,(t_2 - t_1)\big]}_{exp (a+b)\;=\;exp\,a\;\times\; exp\,b}\\
    \\
    &\Longrightarrow\; N(t_2)=N(t_1)\,exp\,\big[r\,(t_2 - t_1)\big]\\
    \\