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Z = null(A)The columns of
Z = null(A) form a basis for the null space of A.
size(Z,2) is the nullity of A.
A*Z is zero.
If A has full rank, Z is empty.
The statements
A = sym(magic(4)); Z = null(A) A*Zreturn
[ -1] [ -3] [ 3] [ 1] [ 0] [ 0] [ 0] [ 0]arithmetic operators,
colspace, rank, rref, svd null in the online MATLAB Function Reference.