El s?b, 04-05-2013 a las 11:12 +1000, Alasdair McAndrew escribi?:
> 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?
A : matrix([1,4],[7,4]);
B : [1,5];
linsolve_by_lu(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.
>
addcol(A,B);
>
> Thanks,
> Alasdair
--
Mario