Re: solve and Abs

*To*: mathgroup at smc.vnet.net*Subject*: [mg69398] Re: solve and Abs*From*: Peter Pein <petsie at dordos.net>*Date*: Sun, 10 Sep 2006 07:20:40 -0400 (EDT)*References*: <edtrmv$le6$1@smc.vnet.net>

Richard J. Fateman schrieb: > Is there a reason (in 5.1) for Solve[x-Abs[x]==0,x] to return {{}}? > This supposedly means all variables can have all possible values. > > Reduce does better. > Oops, I should have read further... Help says "Solve gives {{}} if all variables can have all possible values." I would consider this a bug, not a feature. Sorry for overhasty posting, Peter