From: Alex Shulgin Date: 2008-02-10T22:59:56+09:00 Subject: Re: Internal Rate of Return (#156) On Feb 9, 9:14 pm, b...@insecti.com wrote: > On Feb 9, 5:48 am, Alex Shulgin wrote: > > > Can we return 1/0.0 if NPV does not evaluate to 0 for a reasonably > > large IRR? > > > > irr([+100,+10,+10,+10]) > > => Infinity > > Such cases have an undefined IRR, and thus the behavior is undefined. Is it OK to format user's hard drive then? ;-) -- Alex