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?
>
>