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Linear AlgebraHardRow Reduction & Rank

Row Reduction & Rank · Hard problem

For which value of kk is the system Ax=bA\mathbf x = \mathbf b with A=(4−143−21)A = \begin{pmatrix}4 & -1\\4 & 3\\-2 & 1\end{pmatrix} and b=(113k)\mathbf b = \begin{pmatrix}1\\13\\k\end{pmatrix} consistent?