SolitaryRoad.com

Website owner: James Miller

[ Home ] [ Up ] [ Info ] [ Mail ]

Prove. Prove that the sum of the first n terms of a geometric progression is given by

Proof. The sum of the first n terms of an geometric progression can be written as

where 2) is obtained by multiplying 1) by r. We now subtract 1) from 2) to get

or

or

[ Home ] [ Up ] [ Info ] [ Mail ]