Re: proof by induction?

*To*: mathgroup at smc.vnet.net*Subject*: [mg29737] Re: [mg29729] proof by induction?*From*: Ken Levasseur <Kenneth_Levasseur at uml.edu>*Date*: Fri, 6 Jul 2001 03:24:33 -0400 (EDT)*References*: <200107042243.SAA17412@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

The question below is ill-posed in that there is nothing to prove. If you are given an equation like S= A((r^n+1)-1)/(r-1), there isn't much to say about it. On the other hand if you are given that S=A + Ar + Ar^2 + ... + Ar^n, then you might want to prove that S is equal to the given equation. This is a standard textbook example on induction and I wouldn't feel comfortable providing the proof to what is probably a homework assignment in this forum. Ken Levasseur Math. Sciences UMass Lowell WebMaster at FarOffGrace.com wrote: > 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)

**References**:**proof by induction?***From:*WebMaster@FarOffGrace.com