diff --git a/TST/01_Derivation/3B_formules.pdf b/TST/01_Derivation/3B_formules.pdf
index 2446ddb..fe4f2e6 100644
Binary files a/TST/01_Derivation/3B_formules.pdf and b/TST/01_Derivation/3B_formules.pdf differ
diff --git a/TST/01_Derivation/3B_formules.tex b/TST/01_Derivation/3B_formules.tex
index 029f1c5..fc72dec 100644
--- a/TST/01_Derivation/3B_formules.tex
+++ b/TST/01_Derivation/3B_formules.tex
@@ -24,14 +24,14 @@
      \hline
      $a$ & $0$ \\
      \hline
-     $ax$ & $a$ \\
+     $x$ & $1$ \\
      \hline 
-    $ax^2$ & $2ax$ \\
+    $x^2$ & $2x$ \\
     \hline
-    $ax^3$ & $3ax^2$\\
+    $x^3$ & $3x^2$\\
     \hline
     \rowcolor{tabular}
-    $ax^n$ & $nax^{n-1}$\\
+    $x^n$ & $nx^{n-1}$\\
     \hline
     \end{tabular}
 \end{center}