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Re: Magnitude of Vector

  • To: mathgroup at
  • Subject: [mg19382] Re: [mg19339] Magnitude of Vector
  • From: BobHanlon at
  • Date: Mon, 23 Aug 1999 13:57:04 -0400
  • Sender: owner-wri-mathgroup at


mag[x_?VectorQ] := Sqrt[x.x]

mag[{x, y, z}]

Sqrt[x^2 + y^2 + z^2]

Bob Hanlon

In a message dated 8/21/99 2:50:10 AM, emcbride at writes:

>Was doing some stuff that required 3-D vectors.  Found Dot and Cross,
>but couldn't find a primitive operator for Magnitude.  Is there one?  If
>not, there definitely should be.  Ed McBride, P.E.

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