Re: Dot Product in Cylindrical Coordinates
- To: mathgroup at smc.vnet.net
- Subject: [mg69327] Re: Dot Product in Cylindrical Coordinates
- From: Paul Abbott <paul at physics.uwa.edu.au>
- Date: Thu, 7 Sep 2006 04:30:18 -0400 (EDT)
- Organization: The University of Western Australia
- References: <edm0rl$cj0$1@smc.vnet.net>
In article <edm0rl$cj0$1 at smc.vnet.net>,
"David Park" <djmp at earthlink.net> wrote:
> I still want to keep this alive. Perhaps the terminology is ambiguous?
Answer this, when Sergio says the vector {1,Pi/4,0} is in Cylindrical
Coordinates what, exactly, do you think he means? Again, I highlight the
Pi/4 in the second position.
Also, I am not defending the VectorAnalysis package. Indeed, I prefer to
use the Symbolic Vector Analysis package developed by Hong Qin,
available at
http://www.physics.uwa.edu.au/pub/Mathematica/Calculus/
After loading this package, (naively) declaring the two vectors as
A = DefineVector[1, 1, Pi/4, 0]; B = DefineVector[1, 2, 0, 1];
then
DotProduct[A, B]
2
All of the issues that you raise are resolved by using Qin's package.
Cheers,
Paul
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Paul Abbott Phone: 61 8 6488 2734
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