Question

how can we find AP?​

Answer 1

Answer:

Series: Series is some of terms in a sequence. If there are n terms in a sequence then sum of n term is denoted by Sn.

Sn= a1+a2+a3+…+an

General nth term of AP series:

a1, a2, a3, a4, ….., an

a, a+d, a+d+d, a+d+d+d, ……..

a1=a=a(1-1)d

a2=a+d= a(2-1)d

a3= a+2d=a(3-1)d

an= a+(n-1)d

So formula is to calculate nth term is

an= First term + ( term number- 1) common

Answer 2

Answer:

Arithmetic Progression

An arithmetic progression is a sequence of numbers in which each term is derived from the preceding term by adding or subtracting a fixed number called the common difference "d" ...

The general form of an Arithmetic Progression is a, a + d, a + 2d, a + 3d and so on. ...

Sum of first n terms of an AP: S =(n/2)[2a + (n- 1)d]