engineering recuitment NFC Chemical Plant Operator Mock Test Mathematics Matrices Operations on Matrices
If the matrix \(\begin{bmatrix} \rm\alpha & 2 & 2 \\\ -3 & 0 & 4 \\\ 1 & -1 & 1 \end{bmatrix}\) is not invertible, then:
1
α = -5
2
α = 5
3
α = 0
4
α = 1