Re: Silly question on Matrices
- To: mathgroup at smc.vnet.net
- Subject: [mg111566] Re: Silly question on Matrices
- From: "Eduardo M. A. M.Mendes" <emammendes at gmail.com>
- Date: Thu, 5 Aug 2010 07:01:18 -0400 (EDT)
Many thanks to all for the replies. Regards Ed -----Original Message----- From: Bob Hanlon [mailto:hanlonr at cox.net] Sent: Wednesday, August 04, 2010 9:18 AM To: mathgroup at smc.vnet.net Subject: [mg111566] [mg111552] Re: Silly question on Matrices 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