How to do symbolic matrix manipulations

*To*: mathgroup at smc.vnet.net*Subject*: [mg92276] How to do symbolic matrix manipulations*From*: "Peng Yu" <pengyu.ut at gmail.com>*Date*: Fri, 26 Sep 2008 06:23:44 -0400 (EDT)

Hi, Suppose I have matrices a and b, which does not have any value yet. If I write b * a, mathematica would give me "a b". I'm wondering how to make it know that a and b are matrices, so that it would give me "b a" rather than "a b". Thanks, Peng

**Follow-Ups**:**RE: How to do symbolic matrix manipulations***From:*"Jose Luis Gomez" <jose.luis.gomez@itesm.mx>

**Re: How to do symbolic matrix manipulations***From:*"Adriano Pascoletti" <adriano.pascoletti@gmail.com>