G.P. Series

A series is in Geometric Progression (G.P.), if it has the following form:

a, ar, ar², ar³,ar⁴ ....
where a=First term and r=Common ratio.


Some useful derivations from A.P. Series:

• nth term = ar^(n-1).
• Sum of n terms = a(1 - rⁿ) / (1 - r) where r<1.
• Sum of n terms = a(rⁿ - 1) / (r - 1) where r>1.

Posted in: Geometric Progression,Numerical Operations,Series Formulae