diff --git a/03-Gaussians.ipynb b/03-Gaussians.ipynb
index fa6034e..b2e5db5 100644
--- a/03-Gaussians.ipynb
+++ b/03-Gaussians.ipynb
@@ -1408,8 +1408,8 @@
     "$p(x) = \\int\\limits_{-\\infty}^\\infty f_2(x-x_1)f_1(x_1)\\, dx$\n",
     "\n",
     "$=  \\int\\limits_{-\\infty}^\\infty \n",
-    "\\frac{1}{\\sqrt{2\\pi}\\sigma_z}\\exp\\left[-\\frac{x - z - \\mu_z}{2\\sigma^2_z}\\right]\n",
-    "\\frac{1}{\\sqrt{2\\pi}\\sigma_p}\\exp\\left[-\\frac{x - \\mu_p}{2\\sigma^2_p}\\right] \\, dx$\n",
+    "\\frac{1}{\\sqrt{2\\pi}\\sigma_z}\\exp\\left[-\\frac{(x - z - \\mu_z)^2}{2\\sigma^2_z}\\right]\n",
+    "\\frac{1}{\\sqrt{2\\pi}\\sigma_p}\\exp\\left[-\\frac{(x - \\mu_p)^2}{2\\sigma^2_p}\\right] \\, dx$\n",
     "\n",
     "$=  \\int\\limits_{-\\infty}^\\infty\n",
     "\\frac{1}{\\sqrt{2\\pi}\\sqrt{\\sigma_p^2 + \\sigma_z^2}} \\exp\\left[ -\\frac{(x - (\\mu_p + \\mu_z)))^2}{2(\\sigma_z^2+\\sigma_p^2)}\\right]\n",