how can we find AP?
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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
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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]
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