Solving matrix equations?

• Subject: Solving matrix equations?
• From: Alasdair McAndrew
• Date: Sat, 4 May 2013 11:12:18 +1000

Given an n x n matrix A, and an n x 1 matrix b, is there a way of solving

Ax = b

other than invert(A).b?

If I could append b to A, then I could apply "echelon" to the augmented
matrix.  However, I can't find a command which allows me to append, or
stack matrices.

Thanks,
Alasdair

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