Q. If $A$ is a matrix of order $3 \times 3$ , then $(A^{2})^{- 1}$ is equal to

972 187 KCETKCET 2022Matrices Report Error

A

$(- A^{2})^{2}$

9%

B

$A^{2}$

27%

C

$(A^{- 1})^{2}$

53%

D

$(- A)^{- 2}$

10%

Solution:

$(A^{2})^{- 1} = (A^{- 1})^{2}$