hi

as long as i can show that the column vectors of A ( 3 X 4 matrix ) is linearly dependent, which is easy since the no. of columns is more than that of rows, it shows that B being expressed as a linear combination of

A is not unique for Ap = B right?

in this case, im also saying that if the no. of columns is more than the no of rows in the column vectors of A, then the column vectors in A are linearly dependent...

am i right to say that?