Question

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

• A. 3 × 3
• B. 1 × 3
• C. 3 × 1
• D. 1 × 1

Answer 1

Answer: (D)

1 × 1

Answer 2

(1 × 3), (3) × 3) (3) × 1)

(1 × 3) × (3) × 1)̃ = (1 × 1)