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MathGroup Archive 2002

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Re: Curl

  • To: mathgroup at smc.vnet.net
  • Subject: [mg34912] Re: [mg34875] Curl
  • From: Vladimir Bondarenko <vvb at mail.strace.net>
  • Date: Wed, 12 Jun 2002 02:16:04 -0400 (EDT)
  • Reply-to: Vladimir Bondarenko <vvb at mail.strace.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hello John,

You put x and z too close, without a space between them.
It is good way to say Derive you want multiply x by z.

However, for Mathematica xz means a SINGLE variable.

Compare:

        << Calculus`VectorAnalysis`SetCoordinates[Cartesian[x, y, z]];

        Curl[{xz, yz, -y^2}]

        {-2 y, 0, 0}


        Curl[{x z, y z, -y^2}]

        {-3 y, x, 0}


Regards,

Vladimir Bondarenko




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