diff --git a/FloryHugg_DiffUnbleached.ipynb b/FloryHugg_DiffUnbleached.ipynb
index 3d430d78c2bc66e7f688afdecb4bf59ffdc3238b..e3d4508d1d35317ac4af282a5bba435741cf7513 100644
--- a/FloryHugg_DiffUnbleached.ipynb
+++ b/FloryHugg_DiffUnbleached.ipynb
@@ -226,12 +226,13 @@
     "    return on_boundary\n",
     "bc = df.DirichletBC(F, u_D, boundary)\n",
     "# Weak form spherical symmetry\n",
-    "form = (df.inner((c-c0)/dt, q*X[0]*X[0]) +\n",
-    "        df.inner(df.grad(c), df.grad(X[0]*X[0]*q))-\n",
+    "form = ((c-c0)/dt*q*X[0]*X[0] +\n",
+    "        X[0]*X[0]*df.inner(df.grad(c), df.grad(q))-\n",
     "        c.dx(0)*2*X[0]*q) * df.dx\n",
     "# Weak form 1D\n",
-    "# form = (df.inner((c-c0)/dt, q) +\n",
-    "#         df.inner(df.grad(c), df.grad(q))) * df.dx\n",
+    "# form = ((c-c0)/dt* q + df.inner(df.grad(c), df.grad(q))) * df.dx\n",
+    "# Weak form 1D with .dx(0) notation for derivative in 1st direction.\n",
+    "# form = ((c-c0)/dt*q + c.dx(0)*q.dx(0)) * df.dx\n",
     "t = 0\n",
     "\n",
     "# Solve in time\n",