Matrix m x n

*To*: mathgroup at smc.vnet.net*Subject*: [mg52713] Matrix m x n*From*: "Hiho" <haifeng.gong at gmail.com>*Date*: Sat, 11 Dec 2004 05:21:05 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

How to tell Mathematica symbol A is a real m x n matrix? I want to do this: Assume A is a matrix, f(A) is a matrix function, I want to calculate the partial derivative of each elemet of f(A) with respect to eacg element of A. Thanks!!