diff --git a/2024.01.16_GUAN_package_learning/GUAN_package_learning.ipynb b/2024.01.16_GUAN_package_learning/GUAN_package_learning.ipynb
index f258c92..3a9a291 100644
--- a/2024.01.16_GUAN_package_learning/GUAN_package_learning.ipynb
+++ b/2024.01.16_GUAN_package_learning/GUAN_package_learning.ipynb
@@ -126,7 +126,10 @@
     "h01 = np.identity(N2)\n",
     "LDOS = guan.local_density_of_states_for_square_lattice_using_dyson_equation(fermi_energy, h00=h00, h01=h01, N2=N2, N1=N1)\n",
     "print(LDOS, '\\n\\n')\n",
+    "LDOS2 = guan.local_density_of_states_for_square_lattice_using_dyson_equation_with_second_method(fermi_energy, h00, h01, N2, N1, internal_degree=1, broadening=0.01)\n",
+    "print(LDOS2, '\\n\\n')\n",
     "guan.plot_contour(range(N1), range(N2), LDOS, fontfamily=None)\n",
+    "guan.plot_contour(range(N1), range(N2), LDOS2, fontfamily=None)\n",
     "\n",
     "N1 = 3\n",
     "N2 = 4\n",