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CBSE Class 11 Maths Notes: Sequences & Series – Geometric Progression

by Anand Meena
April 22, 2019
in 11th Class, Class Notes
Reading Time: 1min read
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GEOMETRIC PROGRESSION (G.P.)

A G.P. is a sequence whose first term is non-zero and each of whose succeeding term is r times the preceding term, where r is some fixed non – zero number, known as the common ratio of
the G.P. For example 3 + 9 + 27 + 81 is a G.P. whose common ratio is 3.

nth Term and Sum of n Terms:

If a is the first term and r the common ratio, then G.P. can be written as a, ar, ar2, . . . the nth term, an, is given by an = arn-1. The sum Sn of the first n terms of the G.P. is

Geometric Progression

Geometric Progression Examples

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Tags: CBSE 11 NotesCBSE NotesClass 11 NotesClass 11thClass 11th NotesFree Notes

Anand Meena

Full time entrepreneur, likes to indulge in writing reviews about the latest technologies apart from helping students in career and exam related topics.

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