       Re: Help: Column/Row Vector

• To: mathgroup at smc.vnet.net
• Subject: [mg4333] Re: [mg4253] Help: Column/Row Vector
• From: Chee Lim Cheung/MS/SP_SF <CheeLC at sp.ac.sg>
• Date: Thu, 11 Jul 1996 00:57:53 -0400
• Sender: owner-wri-mathgroup at wolfram.com

```Hi Joh,

Note that column and row matrices are special cases of matrices which are lists
of lists in Mathematica. In your case, the column matrix would be

x = {{x1}, {x2}}

which is a 2x1 matrix (each sublist inside the list signifies a row) and the
row matrix would be

y = {{y1, y2}}

which is a 1x2 matrix. You can see the output using MatrixForm.

The above procedure for writing column and row matrices are quite general and
applies to any number of elements.

I hope this helps.

>From: khinast @ nld.chee.uh.edu @ INTERNET @ SP_SD
>Subject: [mg4253] Help: Column/Row Vector

Hi,

I have two vectors x=(x1,x2) and y = (y1,y1). How can I persuade Mathematica
that e.g. x is a column vector and y is a row vector, which is kind of
important for their multiplication .
I've studied the help page for hours, with no result. So could

khinast at nld.chee.uh.edu

Joh.

==== [MESSAGE SEPARATOR] ====

```

• Prev by Date: Problem with X windows Notebooks
• Next by Date: Re: Fit vs Regress
• Previous by thread: Re: Help: Column/Row Vector
• Next by thread: Re: Plot and colors