Update neumann_dirichlet_code.py to fix two typos

chapter3/multiple_dirichlet.ipynb

@@ -6,7 +6,7 @@
    "source": [
     "# Setting multiple Dirichlet condition\n",
     "\n",
-    "In the previous section, we used a single function to $u_d$ to setting Dirichlet conditions on two parts of the boundary. However, it is often more practical to use multiple functins, one for each subdomain of the boundary. We consider a similar example to [the previous example](./neumann_dirichlet_code) and redefine it consist of two Dirichlet boundary conditions\n",
+    "In the previous section, we used a single function to $u_d$ to setting Dirichlet conditions on two parts of the boundary. However, it is often more practical to use multiple functions, one for each subdomain of the boundary. We consider a similar example to [the previous example](./neumann_dirichlet_code) and redefine it consist of two Dirichlet boundary conditions\n",
     "\n",
     "$$\n",
     "-\\nabla^2 u =f \\quad \\text{in } \\Omega,\n",
@@ -49,7 +49,6 @@
     "import pyvista\n",
     "\n",
     "\n",
-    "\n",
     "def u_exact(x):\n",
     "    return 1 + x[0]**2 + 2 * x[1]**2\n",
     "\n",
@@ -186,13 +185,6 @@
     "else:\n",
     "    figure = plotter.screenshot(\"multiple_dirichlet.png\")"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {

chapter3/multiple_dirichlet.py

@@ -6,7 +6,7 @@
 #       extension: .py
 #       format_name: light
 #       format_version: '1.5'
-#       jupytext_version: 1.14.7
+#       jupytext_version: 1.15.2
 #   kernelspec:
 #     display_name: Python 3 (ipykernel)
 #     language: python
@@ -15,7 +15,7 @@
 
 # # Setting multiple Dirichlet condition
 #
-# In the previous section, we used a single function to $u_d$ to setting Dirichlet conditions on two parts of the boundary. However, it is often more practical to use multiple functins, one for each subdomain of the boundary. We consider a similar example to [the previous example](./neumann_dirichlet_code) and redefine it consist of two Dirichlet boundary conditions
+# In the previous section, we used a single function to $u_d$ to setting Dirichlet conditions on two parts of the boundary. However, it is often more practical to use multiple functions, one for each subdomain of the boundary. We consider a similar example to [the previous example](./neumann_dirichlet_code) and redefine it consist of two Dirichlet boundary conditions
 #
 # $$
 # -\nabla^2 u =f \quad \text{in } \Omega,
@@ -52,7 +52,6 @@
 import pyvista
 
 
-
 def u_exact(x):
     return 1 + x[0]**2 + 2 * x[1]**2
 
@@ -123,6 +122,3 @@ def u_exact(x):
     plotter.show()
 else:
     figure = plotter.screenshot("multiple_dirichlet.png")
-# -
-
-