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MathGroup Archive 2004

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RE: matrix operations

  • To: mathgroup at smc.vnet.net
  • Subject: [mg46381] RE: [mg46354] matrix operations
  • From: "David Park" <djmp at earthlink.net>
  • Date: Mon, 16 Feb 2004 23:42:11 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Paolo,

mat = Array[x, {4, 4}]

To extract the 3rd column as a vector just use...

Part[mat, All, 3]

If you are a new user you will probably save yourself some time by reading
through the first two sections of the book and becoming familiar with the
various Mathematica commands that are available. I know, there are a lot of
them so it isn't easy at first.

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/

From: paolo tarpanelli [mailto:tarpanelli at libero.it]
To: mathgroup at smc.vnet.net


How can i extract a column from a matrix and transform that column in a
vector to make operation with this???

Thanks

Paolo



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