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Re: Symbolic matrix algebra


you must programm it by your own, because
mathematica can not know that in (A+B)^2
A and B are  matrices and you mean

(A+B).(A+B) and *not*


and Dot[] behave quite different than
Times[] for matrices.


"mike.james" wrote:
> This is a very silly question and I have checked the archives for anything
> relevant - I must just be searching on the wrong keywords.
> All I want to do is some simple matrix algebra.
> I want to type in  (A+B)^2 and have it expanded taking account of the fact
> that A and B are matrices.
> I want to use transpose, inverse and apply conditions such as the matrix is
> symmetric etc?
> I've tried non-commutive multiply and a few other tricks.
> I can see that I could write a package but surely there must be one or a
> built in solution I'm missing?
> mikej

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