Sum of N Terms Of An Arithmetic Progression Formula Calculator

Instructions: Use the incremental calculator to study the individual steps in the process of solving for the Sum of N Terms of a Arithmetic Progression formula. Once you understand each step move on to the next calculator and try it yourself.

n/2[2a+(n-1)d]

Enter your own values into the boxes or press new example for computer generated numbers of an example:
a =   n =   d =
To use as a quiz, try to evaluate the expresions yourself and then check your answer.
Calculate:
Step 1: n-1
Step 2: (n-1)d
Step 3: 2a
Step 4: 2a+(n-1)d
Step 4: n/2
Step 4: Sn=n/2[2a+(n-1)d]
Definitions
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Introduction
Chapter 5 Mathematics of Finance