જો $\omega$ એ એકમનું સંકર ઘનમૂળ હોય અને $A = \begin{bmatrix} \omega & 0 & 0 \\ 0 & \omega^2 & 0 \\ 0 & 0 & 1 \end{bmatrix}$ હોય,તો $A^{-1} = \dots$

• A
  $\begin{bmatrix} \omega^2 & 0 & 0 \\ 0 & \omega & 0 \\ 0 & 0 & 1 \end{bmatrix}$
• B
  $\begin{bmatrix} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{bmatrix}$
• C
  $\begin{bmatrix} 1 & 0 & 0 \\ 0 & \omega^2 & 0 \\ 0 & 0 & \omega \end{bmatrix}$
• D
  $\begin{bmatrix} 0 & 0 & \omega \\ 0 & \omega^2 & 0 \\ 0 & 0 & 0 \end{bmatrix}$