diff --git a/module3/exercice3/ConcentrationCO2.Rmd b/module3/exercice3/ConcentrationCO2.Rmd
index ba6512d5bcc426218d603ac569796e7a0aa7e535..cd995071fb93d42adf4dbecabfda816f9a5a2fc9 100644
--- a/module3/exercice3/ConcentrationCO2.Rmd
+++ b/module3/exercice3/ConcentrationCO2.Rmd
@@ -1,8 +1,14 @@
-title: 'Autour du Paradoxe de Simpson '
-author: "Salem Zeiny"
-output:
-html_notebook: default
-pdf_document: default
+---
+title: "Autour du Paradoxe de Simpson"
+author: "NicholasParadza"
+output: 
+  pdf_document:
+    latex_engine: xelatex
+    toc: true
+output_file: "carbonNicholas.pdf"
+output_dir: "module3/exo3"
+---
+
 ---
 
 # Intro