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MathGroup Archive 2002

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Re: Row vs. Column Vectors (or Matrices)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg33926] Re: [mg33908] Row vs. Column Vectors (or Matrices)
  • From: BobHanlon at aol.com
  • Date: Tue, 23 Apr 2002 07:13:59 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 4/22/02 1:32:59 AM, John-Resler at kscable.com writes:

>I'm new to Mathematica and am doing a little linear algebra. I am 
>aware of the MatrixForm[m]
>function but I know of no way to create a row vector eg. [ 1.0  2.0  3.0
>
>] *   [ 1.0
>                                                                      
> 
>                                               2.0
>                                                                      
> 
>                                               3.0].
>
>Can someone point me in the right direction? Thanks ahead of time.

{{a1, a2, a3}}.{{b1},{b2},{b3}}

{{a1*b1 + a2*b2 + a3*b3}}


{{a11, a12, a13},{a21,a22,a23}}.{{b1},{b2},{b3}}

{{a11*b1 + a12*b2 + a13*b3}, {a21*b1 + a22*b2 + a23*b3}}


Bob Hanlon
Chantilly, VA  USA


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