diff --git a/homework3/Homework3.ipynb b/homework3/Homework3.ipynb
index 762f10e..b82164b 100644
--- a/homework3/Homework3.ipynb
+++ b/homework3/Homework3.ipynb
@@ -125,7 +125,7 @@
       "source": [
         "# Problem 4 [2p]\n",
         "\n",
-        "Show that if $\\kappa$ is the kernel matrix of a dataset, i.e. $\\kappa_{ij} = K(x\\i, x^{(j)}) = \\phi(x\\i)^T\\phi(x^{(j)})$ for some kernel function $K$ and an induced feature expansion function $\\phi$, then:\n",
+        "Show that if $\\kappa$ is the kernel matrix of a dataset, i.e. $\\kappa_{ij} = K(x^{(i)}, x^{(j)}) = \\phi(x^{(i)})^T\\phi(x^{(j)})$ for some kernel function $K$ and an induced feature expansion function $\\phi$, then:\n",
         "\n",
         "## 4.1 [0.5p]\n",
         "$\\kappa$ is symmetric, i.e. $\\kappa = \\kappa^T$\n",