There are two types of division.  One is forward division, which is supported by the forward slash operator, /.  The other is the backward division, which is supported by the backslash operator, \.

A/B is equivalent to A*inv(B) when B is square, where inv means inversion.  It is equivalent to A*pinv(B) when B is not square, where pinv means pseudo-inverse. A and B must have the same number of columns.

A\B is equivalent to inv(A)*B when A is square.  It is equivalent to pinv(A)*B when A is not square. B and A must have the same number of rows.

As in matrix multiplication, element wise operation is also supported for the forward division.

>> a=[1,2,3]; b=[4,5,6]; c = a ./ b; print(c)

[Matrix] 1 x 3

         0.25             0.4            0.5