Fix to latex code

optimization/tsp.ipynb

@@ -12,14 +12,14 @@
  "- Sea $d_e$ la distancia del arco $e\\in E$.\n",
  "\n",
  "Luego, el problema a optimizar es el siguiente:\n",
- "\\begin{align}\n",
+ "$$\\begin{align}\n",
  "\\max \\quad & \\sum_{e\\in E} d_e x_e \\\\\n",
  "\\text{s.t.} \\quad & \\sum_{e=(i,j)\\in E} x_e = 1 &&\\forall i \\in C \\\\\n",
  " & \\sum_{e=(i,j)\\in E} x_e = 1 && \\forall j \\in C \\\\\n",
  " & u_i + 1 \\leq u_j + M(1-x_{ij})&& \\forall (i,j)\\in E : j\\neq 0 \\\\\n",
  " & x_e \\in \\{0,1\\} && \\forall (i,j)\\in E\\\\\n",
  " & u_i \\geq 0 && \\forall i \\in C\n",
- "\\end{align}"
+ "\\end{align}$$"
  ]
  },
  {
@@ -61,7 +61,9 @@
  {
  "cell_type": "code",
  "execution_count": 4,
- "metadata": {},
+ "metadata": {
+ "collapsed": true
+ },
  "outputs": [],
  "source": [
  "rnd = np.random\n",