Re: Cross results?

*To*: mathgroup at smc.vnet.net*Subject*: [mg63209] Re: [mg63201] Cross results?*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Mon, 19 Dec 2005 07:01:01 -0500 (EST)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

Presumably it is tracking precision. x=. Cross[{10 Sin[x],-10 Cos[x],2.5},{0.12 Sin[x],-0.12 Cos[x],0}] {0.3 cos(x),0.3 sin(x),0. cos(x) sin(x)} %//Rationalize//N {0.3 cos(x),0.3 sin(x),0.} Bob Hanlon > > From: Virgil Stokes <virgil.stokes at it.uu.se> To: mathgroup at smc.vnet.net > Date: 2005/12/18 Sun AM 07:34:37 EST > Subject: [mg63209] [mg63201] Cross results? > > I have the following > > x=. > Cross[{10 Sin[x],-10 Cos[x],2.5},{0.12 Sin[x],-0.12 Cos[x], 0.0}] > > which gives, > > {0.3 Cos[x], 0.3 Sin[x], 0.Cos[x]Sin[x]} > > why does it not set the last term to 0.0? > >