MathCastle
Linear AlgebraMediumVector Spaces & Bases

Vector Spaces & Bases · Medium problem

What is the dimension of the null space of A=(21−23−3−313−10−21)A = \begin{pmatrix}2 & 1 & -2 & 3 \\ -3 & -3 & 1 & 3 \\ -1 & 0 & -2 & 1\end{pmatrix}?