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Linear AlgebraMediumVector Spaces & Bases

Vector Spaces & Bases · Medium problem

What is the dimension of the null space of A=(−3430010221−1−3)A = \begin{pmatrix}-3 & 4 & 3 & 0 \\ 0 & 1 & 0 & 2 \\ 2 & 1 & -1 & -3\end{pmatrix}?