diff --git a/10_01_montecarlo_integration.ipynb b/10_01_montecarlo_integration.ipynb
index 0957b54..5043985 100644
--- a/10_01_montecarlo_integration.ipynb
+++ b/10_01_montecarlo_integration.ipynb
@@ -31,7 +31,7 @@
     "$$\n",
     "\n",
     "Another Monte Carlo procedure is based on the definition:\n",
-    "$$\\langle g \\rangle=\\frac{1}{(b-a)} \\int _a^b{f(x)dx}.\n",
+    "$$\\langle f \\rangle=\\frac{1}{(b-a)} \\int _a^b{f(x)dx}.\n",
     "$$ In order to determine this average, we sample the\n",
     "value of $f(x)$:\n",
     "$$\\langle f \\rangle \\simeq \\frac{1}{N}\\sum_{i=1}^{N}f(x_i),$$ where the\n",