Question

Let B =$\begin{bmatrix} 1 & 3 & α \\\ 1 & 2& 3 \\\ α & α & 4 \end{bmatrix}$ , α>2 be the adjoint of a matrix A and |A| = 2, then [α - 2α α] B$\begin{bmatrix} α \\\ -2α \\\ α \end{bmatrix}$is equal to

• A. 0
• B. -16
• C. 16
• D. 32

Answer 1

Answer: (B)

-16

Answer 2

The correct option is(B): -16