Change name of exercise 3

exercise-3-types.ipynb

@@ -8,7 +8,7 @@
  }
  },
  "source": [
- "# Exercise 3: Using types to write a simple N-body code\n",
+ "# Exercise 3: Using types - a simple N-body in 80 lines\n",
  "\n",
  "Julia makes it easy to write your own types, which are similar to structs in C-family languages. Multiple dispatch adds a powerful way to handle tasks like default values or different behaviours really easily.\n",
  "\n",
@@ -22,7 +22,11 @@
  "* write a movement function to move the bodies as necessary\n",
  "* write a force function to give an inverse square law force between bodies\n",
  "* write an acceleration function to apply gravity to the bodies\n",
- "* write a step function to bring it all together (acceleration and movement)"
+ "* write a step function to bring it all together (acceleration and movement)\n",
+ "\n",
+ "Extras:\n",
+ "* write plot functions for individual points and for the whole system\n",
+ "* plot it and watch the carnage"
  ]
  },
  {

julia-tutorial.ipynb

@@ -3090,7 +3090,7 @@
  "cell_type": "markdown",
  "metadata": {},
  "source": [
- "# [Example 3: Using types in a simple N-body code](exercise-3-types.ipynb)"
+ "# [Example 3: Using types - a simple N-body in 80 lines](exercise-3-types.ipynb)"
  ]
  },
  {