[Date Index] [Thread Index] [Author Index]
FullSimplify[Abs[Sign[x]],x>=0] equals 1?
Is the following behavior normal? In:= Simplify[Abs[Sign[x]],x>=0] Out= Abs[Sign[x]] In:= FullSimplify[Abs[Sign[x]],x>=0] Out= 1 In:= $Version Out= 4.1 for Sun Solaris (November 8, 2000) In this case I would have expected FullSimplify to give the save answer as Simplify, as I was (naively?) assuming Abs[Sign] equals zero. What am I missing? (Note I get the same output for Version 4.0 for Linux (July 22, 1999).) AC