diff --git a/extra_autodiff.ipynb b/extra_autodiff.ipynb
index 402c959..ebc40bd 100644
--- a/extra_autodiff.ipynb
+++ b/extra_autodiff.ipynb
@@ -118,7 +118,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "At x=3 and y=4, these Hessians are respectively 8, 6, 6, 0. Let's use numerical approximation again to compute them:"
+    "At x=3 and y=4, these Hessians are respectively 8, 6, 6, 0. Let's use the equations above to compute them:"
    ]
   },
   {