From 04f70d86b6a0e5d9882775b3e6c475ee8b1a76b0 Mon Sep 17 00:00:00 2001
From: newt <newtykins@outlook.com>
Date: Mon, 21 Jun 2021 19:34:34 +0100
Subject: [PATCH] Quadratic nth Term

---
 python/calculators/quadratic nth term.py | 20 ++++++++++++++++++++
 readme.md                                |  2 ++
 2 files changed, 22 insertions(+)
 create mode 100644 python/calculators/quadratic nth term.py

diff --git a/python/calculators/quadratic nth term.py b/python/calculators/quadratic nth term.py
new file mode 100644
index 0000000..5cf5fda
--- /dev/null
+++ b/python/calculators/quadratic nth term.py	
@@ -0,0 +1,20 @@
+import operator
+
+def diff(a):
+	return list(map(operator.sub, a[1:], a[:-1]))
+
+sequence = [-0.5,1,4.5,10,17.5]
+row1 = diff(sequence)
+row2 = diff(row1)
+
+a = row2[0] / 2
+b = row1[0] - (3 * a)
+c = sequence[0] - a - b
+
+print('''
+a = {0}
+b = {1}
+c = {2}
+
+Equation: {0}n^2 + {1}n + {2}
+'''.format(a, b, c))
diff --git a/readme.md b/readme.md
index cab45b8..50e18bc 100644
--- a/readme.md
+++ b/readme.md
@@ -36,3 +36,5 @@ Here you can find a bunch of random work from my GCSE Computer Science class dum
     - [12 - Evil](python/pythonchallenge.com/12%20-%20Evil.py)
     - [13 - Disproportional](python/pythonchallenge.com/13%20-%20Disproportional.py)
     - [14 - Italy](python/pythonchallenge.com/14%20-%20Italy.py)
+- [Calculators](python/calculators)
+    - [Quadratic nth Term](python/calculators/quadratic%20nth%20term.py)