Sum Of The First n Terms Of An Arithmetic ProgressionThe sum of first n terms of an A.P. is given by Sn = n/2 [2a + (n – 1) d] or Sn = n/2 [a + Tn] Note: (i) If sum of n terms Sn is given then general term Tn = Sn – Sn-1 where Sn-1 is sum of (n – 1) terms of A.P. (ii) nth term of an AP is linear in ‘n’ Example: an = 2 – n, an = 5n + 2 …….. Also we … [Read more...] about Sum Of The First n Terms Of An Arithmetic Progression

# Sum of n terms of an A.P.

## What Is Arithmetic Progression

What Is Arithmetic Progression https://www.youtube.com/watch?v=gua96ju_FBk Arithmetic Progression (A.P.) Arithmetic Progression is defined as a series in which difference between any two consecutive terms is constant throughout the series. This constant difference is called common difference.A sequence of numbers < tn > is said to be in arithmetic progression … [Read more...] about What Is Arithmetic Progression