Re: Silly question on Matrices
- To: mathgroup at smc.vnet.net
- Subject: [mg111552] Re: Silly question on Matrices
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Wed, 4 Aug 2010 08:18:26 -0400 (EDT)
- Reply-to: hanlonr at cox.net
Use parentheses to exclude MatrixForm from the definition of A
(A = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}) // MatrixForm
A[[1, 1]]
1
A[[1]][[1]]
1
Bob Hanlon
---- "Eduardo M. A. M.Mendes" <emammendes at gmail.com> wrote:
=============
Hello there
I am new to Mathematica. In one of my attempts to understand how it works,
I tried the following example
A={{1,2,3},{4,5,6},{7,8,9}} //MatrixForm
The result seems to be a matrix 3x3 but when I try A[[1][1]], the whole
first line shows up instead of just one element. If I don't use MatrixForm,
it works fine. How can I see a matrix in nice format without wrecking
everything?
Many thanks
Ed