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The value of k, for which is A = \(\begin{bmatrix}3 & 2k \\k^2 & 18 \end{bmatrix}\) singular matrix is |
3 -3 both (a) and (b) None of these |
3 |
Finding the determinant and equating it to 0. \(2 { k }^{ 3 } - 54 = 0\) \(2 ({ k }^{ 3 } - 27) = 0\) \({ k }^{ 2 } - 27= 0\) \({ k }^{ 2 } = 27\) k = 3 |
