diff --git a/Rapport.ipynb b/Rapport.ipynb
index ea9bd530747021b3484db5b351d315331772b6d3..ff5895cc18a6eb351aaff235abd504c182439eb6 100644
--- a/Rapport.ipynb
+++ b/Rapport.ipynb
@@ -482,17 +482,13 @@
     "\n",
     "### 2\n",
     "\n",
-    "$$\n",
+    "$$\\frac{\\partial C}{\\partial A^{(2)}} ? $$\n",
     "\n",
-    "\\frac{\\partial C}{\\partial A^{(2)}} ? $$\n",
-    "$$\n",
-    "\\Rightarrow \\frac{\\partial C}{\\partial a_i^{(2)}}=\\frac{1}{N_{out}}\\sum_{i=1}^{N_{out}} (a_i^{(2)} - y_i)^2 $$\n",
-    "$$\n",
-    "\\Rightarrow \\frac{\\partial C}{\\partial a_i^{(2)}}=\\frac{2}{N_{out}} (a_i^{(2)} - y_i) $$\n",
-    "$$\n",
-    "\\Rightarrow \\frac{\\partial C}{\\partial A^{(2)}}=\\frac{2}{N_{out}} (A^{(2)} - Y)\n",
+    "$$\\Rightarrow \\frac{\\partial C}{\\partial a_i^{(2)}}=\\frac{1}{N_{out}}\\sum_{i=1}^{N_{out}} (a_i^{(2)} - y_i)^2 $$\n",
     "\n",
-    "$$\n",
+    "$$\\Rightarrow \\frac{\\partial C}{\\partial a_i^{(2)}}=\\frac{2}{N_{out}} (a_i^{(2)} - y_i) $$\n",
+    "\n",
+    "$$\\Rightarrow \\frac{\\partial C}{\\partial A^{(2)}}=\\frac{2}{N_{out}} (A^{(2)} - Y)$$\n",
     "\n",
     "### 3\n",
     "\n",