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Linear AlgebraHardDeterminants & Inverses

Determinants & Inverses · Hard problem

For which value of kk is A=(k4−1−2−10−334)A = \begin{pmatrix}k & 4 & -1\\-2 & -1 & 0\\-3 & 3 & 4\end{pmatrix} singular (not invertible)?