Question

The order of $\lbrack xyz\rbrack\begin{bmatrix} a & h & g \\ h & b & f \\ g & f & c \end{bmatrix}\begin{bmatrix} x \\ y \\ z \end{bmatrix}$is

• A. 3×1
• B. 1×1
• C. 1×3
• D. 3×3

Answer 1

Answer: (B)

1×1

Answer 2

Order will be $(1 \times 3)(3 \times 3)(3 \times 1) = (1 \times 1)$