|
|
@@ -109,10 +109,60 @@
|
|
|
"\n"
|
|
|
]
|
|
|
},
|
|
|
+ {
|
|
|
+ "cell_type": "markdown",
|
|
|
+ "id": "f871c05e-02e5-48a7-94ad-9d4a8aa517fa",
|
|
|
+ "metadata": {},
|
|
|
+ "source": [
|
|
|
+ "non-amortizing\n",
|
|
|
+ "month balance principal interest\n",
|
|
|
+ "0 100 0 5\n",
|
|
|
+ "1 100 0 5\n",
|
|
|
+ "2\n",
|
|
|
+ "3\n",
|
|
|
+ "...\n",
|
|
|
+ "119 100 0 5\n",
|
|
|
+ "120 0 100 5\n",
|
|
|
+ "\n",
|
|
|
+ "\n",
|
|
|
+ "Amortizing bond:\n",
|
|
|
+ "r = 6%\n",
|
|
|
+ "month balance principal interest\n",
|
|
|
+ "0 100 0. 0\n",
|
|
|
+ "1 99.9 .1 0.5\n",
|
|
|
+ "2 99.799 .101 0.499\n",
|
|
|
+ "...\n",
|
|
|
+ "119 1 1 0.051\n",
|
|
|
+ "120 0 1 0.05\n",
|
|
|
+ "\n",
|
|
|
+ "condition: \n",
|
|
|
+ "r = a given number (yearly interest rate) \n",
|
|
|
+ "interest = previuos balance * r / 12\n",
|
|
|
+ "principal + intersst = constant for the life of the bond\n",
|
|
|
+ "balance at the final month = 0\n",
|
|
|
+ "\n",
|
|
|
+ "create a function:\n",
|
|
|
+ "f( first principal) -> last balance\n",
|
|
|
+ "\n",
|
|
|
+ "def lastBalance( fp):\n",
|
|
|
+ " ....\n",
|
|
|
+ " ....\n",
|
|
|
+ " ....\n",
|
|
|
+ " \n",
|
|
|
+ "lastBalance(0.1) \n",
|
|
|
+ "2\n",
|
|
|
+ "\n",
|
|
|
+ "lastBalance(1) \n",
|
|
|
+ "-20\n",
|
|
|
+ "\n",
|
|
|
+ "\n",
|
|
|
+ "\n"
|
|
|
+ ]
|
|
|
+ },
|
|
|
{
|
|
|
"cell_type": "code",
|
|
|
"execution_count": null,
|
|
|
- "id": "34384d3e-b1e7-42e3-9654-acc894492eb6",
|
|
|
+ "id": "b1adb876-0acb-439f-a32c-5b20d87c0e02",
|
|
|
"metadata": {},
|
|
|
"outputs": [],
|
|
|
"source": []
|
