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Subject: Re: [office-formula] constraint of ACOT
Is the objection over the reference to PI() rather than directly using the Greek letter Pi? Or is the choice of convention the problem? According to http://mathworld.wolfram.com/InverseCotangent.html there are two conventions: (0,Pi) or (-Pi/2, Pi/2). The former is continuous, while that later has a discontinuity at 0. -Rob "Andreas J. Guelzow" <aguelzow@math.concordia.ab.ca> wrote on 01/06/2010 11:15:44 AM: > > ACOT has the constraint "The result must be between 0 and PI()." This > doe snot look like a valid constraint to me. > > ANdreas > -- > Andreas J. Guelzow, PhD, FTICA > Mathematical & Computing Sciences > Concordia University College of Alberta >
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