I want to replicate this Null space in Matlab
https://www.youtube.com/watch?v=qvyboGryeA8
$$ \begin{pmatrix} 1 & 1 & 1 & 1 \\ 1 & 2 & 3 & 4 \\ 4 & 3 & 2 & 1 \\ \end{pmatrix} $$
With this vector as result
$$ {X_3} \begin{bmatrix} 1 \\ -2 \\ 1 \\ 0 \\ \end{bmatrix} $$
$$ {X_4} \begin{bmatrix} 2 \\ -3 \\ 0 \\ 1 \\ \end{bmatrix} $$
I try use this commands in matlab
A = [1 1 1 1; 1 2 3 4; 4 3 2 1]
Z = null(A)
But it doesn't show me that vectors. What am I doing wrong ?