diff --git a/Week 6/10 Hyperbolic PDEs.ipynb b/Week 6/10 Hyperbolic PDEs.ipynb
index 7559a98..4e65dfc 100644
--- a/Week 6/10 Hyperbolic PDEs.ipynb	
+++ b/Week 6/10 Hyperbolic PDEs.ipynb	
@@ -387,7 +387,17 @@
    "outputs": [],
    "source": [
     "def test_pdeHyperbolic():\n",
-    "    # TODO: Docstring\n",
+    "    \"\"\"\n",
+    "    Check that function pdeHyperbolic returns solutions for the PDE\n",
+    "    ∂^2/∂𝑡^2 𝑢(𝑥,𝑡) − ∂^2/∂𝑥^2 𝑢(𝑥,𝑡) = 0 for boundary conditions given by\n",
+    "        𝑢(0, t) = 0 = 𝑢(x[-1], t) for all 0 <= t <= 1\n",
+    "        y(x, 0) = f(x) for all 0 <= x <= 1\n",
+    "        ∂𝑢(x, t)/∂t = g(x) for t = 0 and all 0 <= x <= 1\n",
+    "    that are within tolerance (TOL = 1e-5) of the exact solution\n",
+    "    𝑢(𝑥,𝑡) = sin(2𝜋𝑥)(cos(2𝜋𝑡)+sin(2𝜋𝑡)),\n",
+    "    using a grid of x and t values of each 1200 equidistant points.\n",
+    "    \"\"\"\n",
+    "    \n",
     "    a = 1\n",
     "    l = 1\n",
     "    x = np.linspace(0, l, 1200)\n",