null.space: Find the null space of a matrix
Description
Computes the null space of A for an arbitrary linear system of the
form Ax = b.Value
Returns an $m \times q$ matrix that is the null space,
where $q$ is the rank of $A$.Details
Computes the null space via singular value decomposition (SVD) of A by
finding the columns of the SVD of A that correspond to the
non-singular column vectors that span A.