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MathGroup Archive 2001

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Re: Shortcut for magnitude of a Vector?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg26733] Re: [mg26710] Shortcut for magnitude of a Vector?
  • From: Ken Levasseur <Kenneth_Levasseur at uml.edu>
  • Date: Fri, 19 Jan 2001 02:14:10 -0500 (EST)
  • References: <200101180557.AAA16616@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Tom:

I usually use a function like this:

In[14]:=
mag = Sqrt[Plus @@ (#^2)] &

Out[14]:=
Sqrt[Plus @@ (#1^2)] &


In[15]:=
mag[{a, b, c}]

Out[15]:=
Sqrt[a^2 + b^2 + c^2]

In[16]:=
mag[{1, 5, -2}]

Out[16]:=
Sqrt[30]

Ken Levasseur
UMass Lowell

mrtommorris wrote:

> Does anyone know if there is a shortcut to find the magnitude of a Vector in
> Mathematica?  I've tried a few things but it just spits my vector back out.
> Thanks for your help.  Tom Morris



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