proof by induction?

*To*: mathgroup at smc.vnet.net*Subject*: [mg29729] proof by induction?*From*: WebMaster at FarOffGrace.com*Date*: Wed, 4 Jul 2001 18:43:45 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

I'm trying to solve this question, where I must prove this equation by induction, but im totally stumped, im hoping you can help me out, thanks the equation is S= A((r^n+1)-1)/(r-1)

**Follow-Ups**:**Re: proof by induction?***From:*Tomas Garza <tgarza01@prodigy.net.mx>

**Re: proof by induction?***From:*Ken Levasseur <Kenneth_Levasseur@uml.edu>