Re: How to mutiply a 3x1 and 1x3 vector
- Subject: [mg3081] Re: [mg3068] How to mutiply a 3x1 and 1x3 vector
- From: dschneid at knox.edu ("Dennis M. Schneider")
- Date: 31 Jan 1996 04:57:06 -0600
- Approved: usenet@wri.com
- Distribution: local
- Newsgroups: wri.mathgroup
- Organization: Wolfram Research, Inc.
- Sender: daemon at wri.com
{{1},{2},{3}}.{{3,4,5}}
or
Transpose[{{1,2,3}}].{{3,4,5}}
Dennis M. Schneider
Knox College
On Tue, 30 Jan 1996, Stephen Nichols wrote:
>
> Hi,
>
> I have another question that I thought would be simple to to in Mathematica.
> I have two vectors A={1,2,3} and B={3,4,5}. How do I multiple them together
> to get a 3x3 matrix. A . B gives me a scalar result. Mma seems to always
> treat the first one as a row vector and the second as a column vector. I
> need it to do the opposite. Treat the first as a column vector and the second
> as a row vector. Any ideas?
>
> thanks,
>
>
>