Re: What's wrong?
- To: mathgroup at smc.vnet.net
- Subject: [mg75312] Re: What's wrong?
- From: do.not at reply.nonet
- Date: Wed, 25 Apr 2007 05:29:43 -0400 (EDT)
- Organization: University Of Oxford, England
- References: <f0kbuc$r25$1@smc.vnet.net>
gogoant06 at yahoo.com.hk wrote:
> In[1]:=
> <<Calculus`VectorAnalysis`
>
> In[2]:=
> CrossProduct[{1,0,0},{0,1,0},Spherical]
>
> Out[2]=
> {0,0,0}
>
> Isn't the result supposed to be {0,0,1}, even in spherical
> coordinates?
>
> lion
>
>
Lion
Your second vector has a magnitude of zero, so it's OK.
Try:
CoordinatesToCartesian[{0,1,0},Spherical]
As the help on (Dot, Cross, and Scalar Triple) Products says:
"These functions convert the given vectors into Cartesian coordinates
and then compute the products using the standard definitions."
Robert